Bai Tap Chuong Halogen Hay

7/28/2019 Bai Tap Chuong Halogen Hay

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NHM HALOGENNguyn Vn ThoiBi 131: xc nh thnh phn dung dch A cha cc ion Na+, Cl-, Br-, I-, ngi ta lm 3 th nghim sau:

- TN 1: ly 20 ml dung dch A, c cn thu c 1,732 gam mui khan- TN 2: ly 20 ml dung dch A, lc k vi nc brom d, sau c cn th thu c 1,685 gam mui

khan.- TN 3: ly 20 ml dung dch A, sc kh clo cho ti d, sau c cn th thu c 1,4625 gam mui

khan.a) Tnh nng mol ca mi ion trong dung dch A.

b) T 1m3 dung dch A c th iu ch c bao nhiu gam brom, iot?Bi 132: Cho 3 gam km tc dng vi 18,69 ml dung dch axit clohidric 14,6% (d = 1,07g/ml). Kh sinh rac dn qua 4 gam ng (II) oxit nung nng.

Tnh th tch ti thiu dung dch axit sunfuric nng 19,6% (d = 1,14g/ml) cn phi ly tc dngvi hn hp thu c nhm tch ng ra khi hn hp. C bao nhiu gam ng c tch ra?Bi 133: a) iu ch kh clo bng cch in phn dung dch mui n NaCl bo ha c mng ngn. Tnh khilng mui n cha 98% NaCl iu ch 560 lt kh clo (kc).

b) Nu dng axit HCl c v MnO2 th khi lng mi cht l bao nhiu iu ch c th tch clotrn?

Bi 134: C cc ha cht: axit HCl c, MnO2, KMnO4 hy iu ch kh clo trn?a) Nu 2 cht oxi ha c khi lng bng nhau, th phn ng no cho lng clo nhiu hn?b) Nu 2 cht oxi ha c s mol bng nhau, th phn ng no cho lng clo nhiu hn?

Bi 135: Cho 1 lt H2 tc dng vi 0,672 lt Cl2 (kc) ri ha tan sn phm vo 19,27 gam nc, thu cdung dch A. Ly 5 gam dung dch A cho tc dng vi AgNO3 d, thu c 0,7175 gam kt ta. Tnh hiusut ca phn ng gia H2 v Cl2.Bi 138: Trong cng nhip, ngi ta in phn dung dch mui n NaCl bo ha sn xut clo. Hy vit

phng trnh phn ng xy ra trong hai trng hp:a) C mng ngn gia anot v catot ca bnh in phn

b) Khng c mng ngnCho bit vai tr ca mng ngn amiang trong trng hp trn.

Bi 139: C 4 l mt nhn ng ring r tng dung dch ca 4 cht sau: HCl, NaCl, BaCl2, NaClO.

Trnh by phng php ha hc nhn bit 4 cht .Bi 140: Cho mangan ioxit tc dng hon ton vi 20 gam dung dch HCl 36,5%. Dn kh sinh ra li qua500 ml dung dch KOH 2M nhit thng.

a)Tnh nng dung dch cc mui sau phn ngb) sau phn ng cn d KOH khng? Nng l bao nhiu? Coi th tch dung dch thay i khng

ng k.Bi 141: t hai bnh trn hai a cn, mi bnh cha 100 gam dung dch HCl 20%. Cn v tr thng bng.

Cho 20 gam km vo bnh th nht v cho 20 gam magie cacbonat vo bnh th hai.a) Cn s v tr no sau khi kt thc phn ng

b) Cn c thng bng khng nu c bnh th hai c bt nhng qu bng cao su thu kh thot ra?Bi 142: Cho hn hp a gm bt Cu v bt Al tc dng hon ton vi kh clo d. Sau phn ng thu c2,24 gam cht rn.

Nu cho hn hp A tc dng vi dung dch HCl 0,1M (d) th thu c 0,224 lt kh (kc) v mt chtkhng tan.

a) Hy vit cc phng trnh phn ng.b) Tnh t l phn trm v khi lng ca Cu v Al trong hn hp A?c)Tnh th tch dung dch HCl 0,1M tham gia phn ng

Bi 145: Nung 3,195 gam hn hp KCl v KClO 3 vi mt lng cht xc tc MnO2, thu c cht kh vmt cht rn. Ha tan cht rn vo nc, ly nc lc cho tc dng vi dung dch AgNO 3 d th thu c4,305 gam kt ta.

a) Vit phng trnh phn ng xy ra.b) Tnh thnh phn phn trm v khi lng ca mi cht trong hn hp u.c) Tnh th tch kh thu c kc.

Bi 146: Cho mt mui halogen ca mt kim loi ha tr II. Ha tan a gam mui vo nc ri chia thnhhai phn bng nhau.

- Phn mt cho tc dng vi dung dch AgNO3 d, thu c 5,74 gam kt ta.- Nhng 1 thanh Fe vo phn hai. Sau khi kt thc phn ng, thanh st nng thm 0,16 gam.


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a) Xc nh cng thc ha hc ca mui.b) Tnh khi lng a gam mui em ha tan.

Bi 147: Ha tan 8 gam hn hp gm st v mt kim loi ha tr II vo dung dch HCl d, thu c 4,48 ltkh H2 (kc). Mt khc, ha tan 4,8 gam kim loi ha tr II cn gn n 500 ml dung dch HCl 1M.

Xc nh tn kim loi v thnh phn phn trm v khi lng ca hn hp.Bi 148: Khi cho 0,54 gam kim loi M c ha tr khng i tc dng ht vi axit HBr, thu c 672 cm 3 khH2 (kc).

a) Xc nh kim loi Mb) Tnh th tch dung dch HBr 1M tham gia phn ng vi M.c) Khi lng mui to thnh sau phn ng l bao nhiu gam, nu hiu sut l 90%.

Bi 149: Cho hn hp NaI v NaBr ha tan vo nc, thu c dung dch A. Cho vo dung dch A mtlng brom va , thu c mui X c khi lng nh hn khi lng ca hn hp mui ban u l a gam.Ha tan X vo nc c dung dch B. Sc kh clo va vo dung dch B, thu c mui Y c khi lngnh hn khi lng ca mui X l 2a gam.

Xc nh thnh phn % theo khi lng ca cc cht trong hn hp mui ban u (coi nh Cl 2, Br2, I2khng phn ng vi nc)Bi 150: 1/ Mui n clorua (NaCl) b ln cc tp cht l Na2SO4, MgCl2, MgSO4, CaCl2, CaSO4, Ca(HCO3)2,Mg(HCO3)2. Hy trnh by phng php ha hc tch ring NaCl tinh khit.

2/ Hon thnh cc phng trnh phn ng dng phn t v ion rt gn theo s chuyn ha sau:dd FeCl3 + Na2CO3 + H2O

KAlO2 + NH4Cl + H2O

Cu + NaNO3 + HCl

FeCl2 + HCl + O2 Bi 151: Khi nung nng mui kaliclorat th mt phn mui phn hy cho oxi, mt phn to thnh mui kali

peclorat v kali clorua.a) Vit cc phng trnh phn ng phn hy mui kali clorat (cn bng phng trnh bng phng

php thng bng electron)b) Tnh khi lng cc cht rn cn li sau khi nung 44,1 gam kali clorat. Bit rng c 6,72 lt kh oxi

thot ra, kali clorat phn hy hon ton.

Bi 152: cho kh clo iu ch c bng cch ch ha 69,6 gam mangan ioxit vi axit clohidric c (va) i qua 500 ml dung dch NaOH 4M.Xc nh nng mol ca cc mui c to thnh.

Bi 154: C mt hn hp gm: st, st (II) oxit v st (III) oxit. Ly 1 gam hn hp cho tc dng vi HClc 112 ml H2 (kc). Nu kh 1 gam hn hp bng hidro, to thnh 0,2115 gam nc.Bi 155: Cho sn phm thu c khi un nng hn hp 5,6 gam bt st v 1,6 gam bt lu hunh vo 500ml dung dch HCl, thu c hn hp kh v dung dch A (hiu sut 100%).

a) Tnh % th tch hn hp khb) trung ha axit HCl cn d trong dung dch A phi dng 125 ml dung dch NaOH 0,1M. Tnh

nng mol ca dung dch HCl dng.


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ng Xun Th5.1 Cu hnh electron lp ngoi cng ca nguyn t halogen l:

A. ns2np4 B. ns2np5 C. ns2np6 D. (n1)d10ns2np55.2 Cu hnh electron lp ngoi cng ca ion halogenua (X-) l:

A. ns2np4 B. ns2np5 C. ns2np6 D. (n1)d10ns2np55.4 Trong nhm VIIA, tnh phi kim ca cc nguyn t i t flo n iot:

A. tng dn v nng lng lin kt trong phn t X-X gim dn t F-F n I-I

B. gim dn theo chiu tng ca khi lng nguyn t t F n IC. gim dn theo chiu tng ca bn knh nguyn t v chiu gim ca m inD. tng dn theo chiu tng ca bn knh nguyn t v chiu gim ca m in

5.5 Nguyn t ca nguyn t X c 11 electron cc obitan p. Nguyn t X l:A. Na B. F C. Br D. Cl

5.6 Xc nh s oxi ha ca cc nguyn t trong cc hp cht: HCl, CCl 4, NaClO, HClO2, KClO3, KClO4,ClF, BrCl, BrF3, HBrO3, IBr, ICl3, ICl5, IF7.5.7 Nguyn t A c ha tr I tc dng hon ton vi Ca thu c 10,0 gam mui, nu cng ly mt lngnh trn nguyn t A cho tc dng vi Al th thu c 8,9 gam mui. Xc nh nguyn t A v khi lng A s dng.5.10 Nguyn t halogen Y tn ti di dng Y2. Khi cho 16 gam Y2 tc dng vi mt kim loi kim thu c23,8 gam mui. Xc nh nguyn t Y v vit cc PTHH gia Y 2 vi st, nhm, hidro v oxi.5.11 Nguyn t ca nguyn t X c 17 electron cc obitan p. Nguyn t X l:

A. I B. F C. Br D. Cl5.12 Nc clo c cha cc cht:

A. HCl, HClO B. HCl, HClO, Cl2 C. HCl, Cl2 D. Cl25.13 Ha tan kh Cl2 vo dung dch KOH c, nng, d thu c dung dch cha cc cht thuc dy no sauy?

A. KCl, KClO3, Cl2 B. KCl, KClO, KOHC. KCl, KClO3, KOH D. KCl, KClO3

5.14 Ha tan kh Cl2 vo dung dch NaOH long, nng, d nhit phng thu c dung dch cha cccht:

A. NaCl, NaClO3, Cl2 B. NaCl, NaClO, NaOH

C. NaCl, NaClO3, NaOH D. NaCl, NaClO35.15 C 3 l ng ba kh ring bit l clo, hidro clorua v oxi. C th dng mt cht no trong s cc chtsau ng thi nhn ra c c 3 kh?

A. giy qu tm tm t B. dung dch Ca(OH)2C. dung dch BaCl2 D. dung dch H2SO4

5.16 C 3 l ng ba dung dch ring bit l BaCl 2, NaHCO3, v NaCl b mt nhn. C th dng mt chtno sau y nhn bit c c 3 dung dch?

A.dung dch Ba(OH)2 B. dung dch NaOHC. dung dch AgNO3 D. dung dch H2SO4

5.17 Trong mui NaCl c ln NaBr v NaI. loi 2 mui ny ra khi NaCl ngi ta c th:A. nung nng hn hpB. cho hn hp tc dng vi dung dch HCl c

C. cho hn hp tc dng vi Cl2 sau un nngD. c A, B, C

5.18 iu ch clo ngi ta c th lm nh sau:A. in phn mui NaCl nng chy hoc dung dch NaCl bo ha c mng ngnB. Cho KMnO4 hoc MnO2 tc dng vi dung dch HCl cC. Cho KClO3 tc dng vi dung dch HCl cD. A hoc B, C

5.19 iu ch flo, ngi ta c th lm nh sau:A. in phn mui NaF nng chy hoc dung dch NaF trong HF lngB. Cho KMnO4 hoc MnO2 tc dng vi dung dch HF cC. Cho KClO3 tc dng vi dung dch HF cD. A hoc B, C

5.20 iu ch HCl ngi ta c th lm nh sau:A. Cho dung dch BaCl2 tc dng vi dung dch H2SO4 longB. Cho mui NaCl tc dng vi H2SO4 c, nng hay cho Cl2 tc dng vi H2


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C. Cho KCl tc dng vi dung dch KMnO4 c mt H2SO4D. A hoc B, C

5.21 iu ch HBr ngi ta c th lm nh sau:A. Cho mui NaBr tc dng vi dung dch H2SO4 cB. Cho dung dch BaBr2 tc dng vi dung dch H2SO4 long hay cho Br2 tc dng trc tip vi H2C. Thy phn photphat tribromuaD. A hoc B, C

5.22 iu ch HI ngi ta c th lm nh sau:A. Cho dung dch BaI2 tc dng vi dung dch H2SO4 longB. Cho mui NaI tc dng vi dung dch H2SO4 c hay cho I2 tc dng vi H2C. Thy phn photphat triiotuaD. A hoc B, C

5.23 Kh H2 thu c bng phng php in phn dung dch NaCl i khi b ln tp cht l kh Cl 2. kim tra xem kh H2 c ln Cl2 hay khng, ngi ta thi kh qua mt dung dch c cha KI v h tinh bt.Hy gii thch v sao ngi ta li lm nh vy?5.24 Hiro florua thng c iu ch bng cch cho axit sunfuric c tc dng vi canxi florua cn dng iu ch 250 kg dung dch axit flohiric 40%.5.30 mt dung dch c cc tnh cht:

- Tc dng vi nhiu kim loi nh Mg, Zn, Fe u gii phng H2- Tc dng vi baz hoc oxit baz to thnh mui v nc- Tc dng vi vi (CaCO3) gii phng CO2Dung dch l cht no sau y?A. NaOH B. NaCl C. HCl D. H2SO4 c nng

5.31 C 3 cht kh ng trong 3 l ring bit: CO, CO 2, Cl2. Hy chng minh s c mt ca mi cht kh.Nu cch lm v vit phng trnh ha hc.5.32 Dy gm cc cht u phn ng vi dung dch HCl l:

A. NaOH, Al, CuSO4, CuOB. Cu(OH)2, Cu, CuO, FeC. CaO, Al2O3, Na2SO4, H2SO4D. NaOH, Al, CaCO3, Cu(OH)2, Fe, CaO, Al2O3.

5.36 Tnh lng clo thu c khi cho 24,5 gam KClO 3 tc dng vi dung dch HCl c, d. Lng clo nyphn ng c vi bao nhiu gam st theo l thuyt?5.37 Tnh th tch kh Cl2 thu c kc khi un nng nh 3,16 gam KMnO4 vi dung dch HCl c d.5.38 Cn dng bao nhiu gam KClO3 tc dng vi dung dch Hcl d lng clo sinh ra phn ng vi dungdch KI to ra 38,1 gam I2.5.39 Tnh th tch kh Cl2 thu c kc khi un nng nh 3,48 gam MnO2 vi dung dch axit HCl c d.Lng clo ny phn ng ht vi bao nhiu gam nhm kim loi v to thnh bao nhiu gam mui khan?5.42 in phn c mng ngn dung dch NaCl bo ha bng dng in mt chiu thu c 33,6 lt kh clo(kc). Tnh khi lng dung dch nc Javel thu c khi cho lng kh clo ny phn ng hon ton vi 600gam dung dch NaOH 20%.5.44 Tnh khi lng KMnO4 cn thit iu ch lng clo phn ng vi nhm to thnh 13,35 gammui AlCl3 (gi s hiu sut phn ng u t 100%).

5.50 Thm 16,5 ml dung dch HCl 20% (c d = 1,106g/ml) vo dung dch cha 51 gam AgNO3. Hi cn baonhiu ml dung dch NaCl nng 13% (c d = 1,15g/ml) kt ta hon ton lng AgNO 3 cn li trongdung dch.5.55 Cho m gam Fe vo trong bnh kn cha kh clo, t nng phn ng xy ra hon ton, em cht rnthu c ha tan vo nc thy khi lng cht rn khng tan l 1 gam. C cn dung dch thu c 19,05gam cht rn khan. Tnh m v khi lng clo tham gia phn ng.5.59 Cho 22 gam hn hp X gm Fe v Al tc dng vi 2 lt dung dch HCl 0,3M thu c V lt H2 (kc).

a) Chng minh hn hp X khng tan ht.b) Cho 22 gam hn hp X tc dng va vi Cl2 thu c m1 gam mui, cho 22 gam hn hp X tc

dng va vi I2 thu c m2 gam mui.Bit m2 m1 = 1,39,3 gam. Tnh khi lng mi kim loi trong hn hp X.

5.60 Khng dng thm thuc th, hy phn bit cc cht trong cc l ring bit sau: MgCl 2, NaOH, NH4Cl,BaCl2, H2SO4.5.66 Cho hn hp A gm KCl, KBr tc dng vi dung dch AgNO3 d. Lng kt ta sinh ra sau khi lmkh c khi lng bng lng AgNO3 phn ng.


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a) Xc nh thnh phn % khi lng mi mui trong hn hp A.b) Cho 25 gam hn hp A tc dng vi 300 gam dung dch AgNO 3 20%. Tnh khi lng kt ta v

nng % cc cht tan cn li trong dung dch.5.69 Hon thnh cc phng trnh ha hc theo s sau: ghi r iu kin (nu c). Trong cc phn ng ,

phn ng no l phn ng oxi ha kh, ch r cht oxi ha, cht kh.NaClCl2HClKClCl2Br2BaBr2HBrBr2I2

5.71 Cho 3,78 gam Al phn ng va vi dung dch XCl3 to thnh dung dch Y v cht rn Z. Khi lng

dung dch Y gim 4,06 gam so vi dung dch XCl3.a) Xc nh cng thc ca mui XCl3

b) Cho dung dch Y tc dng vi dung dch NaOH d, sau sc kh CO2 vo cho n khi phn ngkt thc th thu c m gam kt ta.

Vit cc phng trnh ha hc v tnh m.5.72 Hn hp X cha Fe v kim loi M (c ha tr khng i) vi t l s mol ca M v Fe l 2 : 3. Chia Xlm 3 phn bng nhau:

- Phn 1: t chy ht trong O2 d c 33,4 gam hn hp gm Fe3O4 v oxit ca M.- Phn 2: Ha tan trong dung dch HCl thu c 13,44 lt kh (kc) v mt dung dch trong sut.- Phn 3: tc dng ht vi 16,8 lt kh Cl2 (kc)a) Xc nh kim loi M

b) Tnh % khi lng mi kim loi trong hn hp X.BI TP V HALOGEN (tt)

Cu 1: Lp phng trnh phn ng gia hidro vi flo, clo, brom, iot v cho bit cc halogen ng vai tr gtrong cc phn ng ?Cu 2: Hon thnh cc phng trnh phn ng sau v nhn xt v s oxi ha ca cc halohen trong hp chtthu c.

F2 + H2 HF

Cl2 + Fe FeCl3

Ca + Br2 CaBr2

I2 + Al 2xtH O AlI3Cu 3: Cho 3 cht: kh Cl2, bt Fe, dung dch HCl. Vit PTHH ca cc phn ng biu din s sau:

Cu 4: Trong phn ng: Cl2 + H2O HCl + HClO, pht biu no sau y ng?A. Clo ch ng vai tr cht oxi haB. Clo ch ng vai tr cht khC. Clo va ng vai tr cht oxi ha, va ng vait r cht khD. Nc ng vai tr cht kh

Cu 5: Tnh khi lng clo c trong hai tn mui n cha 98% NaCl.Cu 6: Cho 0,6 lt kh clo phn ng vi 0,4 lt kh hidro.

a/ Tnh th tch kh HCl thu c (cc th tch kh o cng iu kin nhit , p sut)b/ Tnh thnh phn % v th tch ca cc kh c trong hn hp sau phn ng.

Cu 7: Tnh khi lng Cu v th tch clo (kc) tham gia phn ng nu c 27 gam CuCl 2 to thnh sauphn ng.Cu 8: Tnh th tch kh clo thu c ktc khi:

a/ cho 7,3 gam HCl tc dng vi MnO2b/ cho 7,3 gam HCl tc dng vi KMnO4

Cu 9: Khi in phn dung dch mui n bo ha sn xut xt, ngi ta thu c 560 lt kh clo kc.Tnh khi lng mui n cha 98% dng in phn.Cu 10: Ly 3 lt clo, cho tc dng vi 2 lt hidro. Hiu sut phn ng khong 90%. Hi th tch hn hp thuc l bao nhiu? (Cc th tch u o cng k nhit v p sut).Cu 11: Thi kh clo i qua dung dch natri cacbonat, ngi ta thy c kh cacbonic thot ra. Hy gii thch

hin tng bng cc phng trnh ha hc.Cu 12: Cho 25 gam nc clo vo mt dung dch c cha 2,5 gam KBr ta thy dung dch chuyn sang muvng v KBr vn cn d.

a/ Gii thch hin tng.

FeCl2

FeCl3Fe

(1) (2)

(3)


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b/ Sau th nghim, nu ta c cn dung dch th cn li 1,61 gam cht rn khan. Gi s ton b clo trongnc clo phn ng, hy tnh C% ca clo trong nc clo.

c/ Tnh khi lng tng cht trong cht rn khan thu c.Cu 13: Phn ng no sau y dng iu ch kh hidroclorua trong phng th nghim?

A. H2 + Cl2o

t 2HCl

B. Cl2 + H2O HCl + HClO

C. Cl2 + SO2 + 2H2O 2HCl + H2SO4D. NaCl(r ) + H2SO4 (c)

ot

NaHSO4 + HCl

Cu 14: Cht no sau y khng dng lm kh kh hiddro clorua?A. P2O5 B. NaOH rn C. H2SO4 m c D. CaCl2 khan

Cu 15: Mui n b ln tp cht l Na2SO4, MgCl2, CaCl2, v CaSO4. Hy trnh by phng php ha hc loi b tp cht. Vit PTHH ca cc phn ng xy ra.Cu 16: Cho hn hp A gm Cu v Mg vo dung dch HCl d, thu c 5,6 lt kh (kc) khng mu v mtcht rn khng tan B.

Dng dung dch H2SO4 c, nng ha tan hon ton cht rn B thu c 2,24 lt kh SO2 (kc).a/ Vit PTHH ca cc phn ng xy ra.

b/ Tnh khi lng hn hp A ban u.

Cu 17: C 4 bnh khng ghi nhn, mi bnh cha mt trong cc dung dch sau: natri clorua, natri nitrat, bariclorua v bari nitrat.Tnh by phng php ha hc nhn bit tng dung dch cha trong mi bnh.

Cu 18: c tn cc hp cht di y v cho bit s oxi ha ca clo trong mi hp cht: Cl 2O, HClO2,Cl2O7, HClO, Cl2O3, HClO4, HClO3, KCl, NaClO, Ca(ClO)2, KClO3, CaOCl2.Cu 19: Dn kh clo vo:

a/ Dung dch KOH nhit thngb/ Dung dch KOH un nng n gn 100oCHy vit phng trnh ha hc ca phn ng xy ra trong mi trng hp. Cho bit vai tr ca clo

trong mi phn ng oxi ha kh .Cu 20: Cho m gam nhm vo trong bnh kn cha kh clo, t nng phn ng xy ra hon ton, em chtrn thu c ha tan vo nc thy khi lng cht rn khng tan l 10 gam. C cn dung dch thu c

26,7 gam cht rn khan. Tnh m v khi lng clo tham gia phn ng.Cu 21: Mt mui c cng thc phn t FeX2 trong nguyn t X chim 55,9% theo khi lng. Xc nhcng thc phn t ca mui v vit ba PTHH ca phn ng trc tip to thnh mui FeX 2.Cu 22: Mt mui c cng thc phn t l FeX3. Cho dung dch cha 3,25 gam FeX3 tc dng vi lng ddung dch AgNO3 thu c 8,61 gam kt ta. Xc nh cng thc phn t ca mui v vit 3 PTHH ca

phn ng trc tip to thnh mui FeX3.Cu 23: Th tch kh clo cn phn ng ht vi kim loi M bng 1,5 ln th tch kh thu c khi cho cnglng kim loi M tc dng vi dung dch HCl d cng iu kin. Khi lng mui clorua sinh ra khitc dng vi Cl2 gp 1,2886 ln khi lng mui sinh ra khi phn ng vi dung dch HCl. Xc nh M.Cu 24: Mt mu Fe b oxi ha mt phn thnh FeO. Ly 1,2 gam mu ny cho tc dng vi dung dchHCl 0,1M thu c 336 ml kh kc. Xc nh hm lng ca Fe trong mu v tnh th tch dung dch HCl tithiu cn dng.

CHNG HALOGENBi 132: Cho 3 gam km tc dng vi 18,69 ml dung dch axit clohidric 14,6% (d = 1,07g/ml). Kh sinh rac dn qua 4 gam ng (II) oxit nung nng.

Tnh th tch ti thiu dung dch axit sunfuric nng 19,6% (d = 1,14g/ml) cn phi ly tc dngvi hn hp thu c nhm tch ng ra khi hn hp. C bao nhiu gam ng c tch ra?Bi 138: Trong cng nhip, ngi ta in phn dung dch mui n NaCl bo ha sn xut clo. Hy vit

phng trnh phn ng xy ra trong hai trng hp:a) C mng ngn gia anot v catot ca bnh in phn

b) Khng c mng ngnCho bit vai tr ca mng ngn amiang trong trng hp trn.

Bi 134: C cc ha cht: axit HCl c, MnO2, KMnO4 hy iu ch kh clo t cc ha cht trn?a) Nu 2 cht oxi ha c khi lng bng nhau, th phn ng no cho lng clo nhiu hn?b) Nu 2 cht oxi ha c s mol bng nhau, th phn ng no cho lng clo nhiu hn?


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Bi 142: Cho hn hp A gm bt Cu v bt Al tc dng hon ton vi kh clo d. Sau phn ng thu c2,24 gam cht rn.

Mt khc nu cho hn hp A tc dng vi dung dch HCl 0,1M (d) th thu c 0,224 lt kh (kc) vmt cht khng tan.

a) Hy vit cc phng trnh phn ng.b) Tnh t l phn trm v khi lng ca Cu v Al trong hn hp A?c) Tnh th tch dung dch HCl 0,1M tham gia phn ng

Bi 147: Ha tan 8 gam hn hp gm st v mt kim loi ha tr II vo dung dch HCl d, thu c 4,48 ltkh H2 (kc). Mt khc, ha tan 4,8 gam kim loi ha tr II cn gn n 500 ml dung dch HCl 1M.

Xc nh tn kim loi v thnh phn phn trm v khi lng ca hn hp.Bi 154: C mt hn hp gm: st, st (II) oxit v st (III) oxit. Ly 1 gam hn hp cho tc dng vi HClc 112 ml H2 (kc). Nu kh 1 gam hn hp bng hidro, to thnh 0,2115 gam nc.Cu 16: Cho hn hp A gm Cu v Mg vo dung dch HCl d, thu c 5,6 lt kh (kc) khng mu v mtcht rn khng tan B.

Dng dung dch H2SO4 c, nng ha tan hon ton cht rn B thu c 2,24 lt kh SO2 (kc).a/ Vit PTHH ca cc phn ng xy ra.

b/ Tnh khi lng hn hp A ban u.Bi 1: Vit phng trnh ho hc ca phn ng thc hin cc bin i di y v ghi r iu kin phn ng.

a/ HCl

Cl2

FeCl3

NaCl

HCl

CuCl2

AgClb/ F2 OF2CaF2 HF

SiF4c/ KClO HClO

KCl Cl2KClO3 KCl AgCl

Bi 2: em in phn 200ml dung dch NaCl 2M (d = 1,1 g/ml) vi in cc bng than c mng ngnxp. Khi catot thot ra 6,72 lt kh th ngng in phn.

Cht cn li trong trong dung dch sau in phn l g? V C% ca n l bao nhiu?Bi 3: Cho 4,48 lt kh clo (kc) tc dng va vi 88,81ml dung dch KBr c d = 1,34 g/ml. Xc nh

C% ca dung dch KBr lc ban u?

Bi 4: Hy chn na s phn ng ct II ghp vi na s phn ng ct I cho ph hp.Ct I Ct II

a) Cl2 + H2O 1) KCl + O2b) Cl2 + NaOH(dd) 2) NaCl + NaClO3 + H2Oc) Cl2 + NaOH(dd)

ot 3) NaCl + NaClO + H2O

d) KClO3 2,MnOto 4) HCl + HClO

e) KClO3 o

t 5) KClO4 +KCl6) HCl + H2O7) K + Cl2 + O2

Bi 5: Cho 17,4 g MnO2 tc dng ht vi dung dch HCl d. Ton b kh Clo sinh ra c hp th vo145,8 g dung dch NaOH 20% ( nhit thng) to ra dung dch A.

Hi dung dch A c nhng cht no? Tnh nng phn trm ca tng cht ?Bi 6: Hn hp 2 mui NaCl, NaBr nng 4,82 gam ho tan hon ton trong nc c dung dch A. Sckh clo d vo dung dch A ri c cn hon ton dung dch sau phn ng thu c mui khan. Ly lngmui khan ny ho tan vo nc ri cho phn ng vi dung dch AgNO 3 d th thu c 8,61 gam kt ta.Tnh thnh phn phn trm mi mui trong hn hp u?

Cu 1: Cho 13,9 gam hn hp X gm Al v Fe tc dng vi dung dch HCl d thu c 7,84 lt H 2(kc). Mt khc cng ly lng X cho tc dng vi dng vi Cl 2 d thu c hn hp mui Y, tnh khilng mui Y?

Cu 2: Xc nh nng mol ca dung dch KI bit rng 200ml dung dch tc dng ht vi kh Cl 2th gii phng 76,2 gam I2.

Cu 3: Vit phng trnh ha hc ca phn ng thc hin cc bin i di y v ghi r iu kin phnng (nu c).

HI I2 NaI I2 HIO3 NaIO3


8/8

Cu 4:Kh hidro, thu c bng phng php in phn dung dch NaCl, i khi b ln tp cht l khClo. kim tra xem kh hidro c ln clo hay khng ngi ta, ngi ta thi kh qua mt dung dch ccha kali iotua v tinh bt. Hy gii thch v sao ngi ta lm nh vy.

Cu 5: Cho cc phn ng ho hc sau:Cl2 + A BB + Fe C + H2C + Cl2 D

D + NaOH E + NaClXc nh cc cht A, B, C, D, E.

Cu 6: Trnh by phng php ho hc nhn bit cc dung dch mt nhn:NaCl, NaBr, KI, HCl, H2SO4, KOH.

Cu 7: X, Y l 2 nguyn t halogen thuc 2 chu k lin tip trong h thng tun hon. Hn hp A cha 2mui ca X v Y vi natri.

kt ta hon ton 2,2 gam hn hp A cn dng 150ml dung dch AgNO 3 0,2M. X, Y lnhng nguyn t no? Cu 8: So snh tnh oxh ca F2, Cl2, Br2, I2. Gii thch, v vit phng trnh phn ng chng minh.

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