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Acids and Bases (Objective Questions)
1. Hydrogen chloride in toluene cannot conduct electricity because it is
Hidrogen klorida dalam toluena tidak dapat mengalirkan elektrik kerana ia
A a weak acid
asid lemah
B only partially ionizesterion separasahaja
C exist as molecule
wujud sebagai molekulD a covalent compound
sebatian kovalen
2. 1M sodium hydroxide, NaOH solution contains1M larutan natrium hidroksida, NaOH mengandungi
I 4 g NaOH in 10 cm3 solution4 g NaOH dalam 10 cm3 larutan
II 40 g NaOH in 1 dm3 solution
40 g NaOH dalam 1 dm3 larutanIII 4 g NaOH in 100 cm3 solution
4 g NaOH dalam 100 cm3 larutan
IV 1 g NaOH in 25 cm3 solution
1 g NaOH dalam 25 cm3 larutan
A I and III
B II and IVC II and III
D I and IV
3. X solution with concentration 1 mol dm-3 has a pH of 2. Which of the following is a X
solution?
Larutan X berkepekatan 1 mol dm-3 mempunyai pH 2. Antara berikut yang manakah
larutan X?
A Sodium hydroxide
Natrium hidroksida
B Ammonia aqueousAmmonia akueus
C Ethanoic acidAsid etanoik
D Sulphuric acid
Asid sulfuric
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4.
Diagram 1
What is the molarity, of the phosphoric acid , H3PO4 in mol dm-3 ?
[ Relative atomic mass: H = 1, O = 16, P = 31 ]
Berapakah kemolaran asid fosforik , H3PO4 dalam mol dm-3?
A 1.25
B 1.28
C 1.45D 2.45
5. What is the volume of 0.50 mol dm-3 potassium hydroxide, KOH solution required toneutralize 100 cm3 of 0.1 mol dm-3 sulphuric acid, H2SO4?
Berapakah isipadu kalium hidroksida, KOH 0.50 mol dm-3 yang diperlukan untuk
meneutralkan 100 cm3 asid sulfurik, H2SO4 0.1 mol dm-3 ?
A 60 cm3
B 40 cm3
C 30 cm3
D 20 cm3
6. Which of the following substances partially ionise in water?Antarabahan-bahan berikut, yang manakah mengion separa dalam air?
A Potassium hydroxideB Sodium hydroxide
C Ammonia
D Nitric acid
7. What is the volume of 3.65 g dm-3 hydrochloric acid needed to exactly neutralize 20 cm3
of 0.2 mol dm-3 sodium hydroxide solution?Berapakah isipadu asid hidroklorik yang diperlukan untuk meneutralkan 0.2 mol dm-3larutan natrium hidroksida?
A 10 cm3
B 20 cm3
C 30 cm3
D 40 cm3
Phosphoric acid 122.5 g dm-3H3PO4
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8. Which of the following substances suitable to reduce acidic soil?
Bahan manakah yang sesuai untuk mengurangkan keasidan tanah?
I sodium nitrite
II Powdered lime
III Potassium iodideIV Ashes of burnt wood
A I and IIB I and III
C II and IV
D III and IV
9. Which of the following substances has a pH value greater than 7?
Antara bahan berikut, yang manakah mempunyai nilai pH lebih daripada 7?
A SoapB Vinegar
C Orange juiceD Propanoic acid
10. What is the mass of potassium hydroxide contained in 250 cm3 of 0.5 mol dm-3potassium hydroxide?
Berapakah jisim kalium hidroksida dalam 250 cm3 larutan kalium hidroksida 0.5 mol
dm-3 ?
[ Relative atomic mass: H = 1, O = 16, K = 39 ]
A 56 g
B 28 gC 14 g
D 7 g
Answer:
1 C 6 C
2 B 7 D
3 D 8 C
4 A 9 A
5 B 10 D