(D Ethanol is ffmated with acetiq acid in ca 0 concent P;-fasen
ratedsulphurk 3Cld
QUESTION 2
) (1) Acetylene (ethyne) has
mg and the change in internal energy of L the gas. [4] an r M(i)
The vapour pressure of di111i@ aqueous_ solution of cane sugar *8
(CIZHZZOH) is 750 mm of I 373 K.Calculate the mole fract10f1
the solute. . a . (ii) Derive qualitatively, the fjlatltilgZ '
between osmotic pressurel file [3] 4 molecular weight of the 50
ucrystalline solid an solid.
(ii) Why is the co-ordination number 12 not found in ionic
crvstal?
(iii) HOW would you erove that the number of atoms/ molecules
per unit cell is one, four for the simple cube and face centredunit
cell respectively. (iv) What is the co-ordination nnmber carbon
atoms in graphite? [4]
(b) (i) What is the difference between molecularity and order of
areaction? (ii) The specific reaction rate of a chemical reaction
at 273K and 303 K are respectively 2.45 x 105 and 1.62 x 10*.
Calculatethe energy of activation of this reaction. [3]
(C) (i) State law of mass action. (ii) When a graph is plotted
between log K versus 1/T for a first order reaction, a straightline
is formed.
7/31/2019 2012-03-20-011.jpg
3/3
What is the slope of the line? [3]
d an amorphous
QUESTION 4
(2!) Explain the following: (i) A 0.01 M acetic acid hashigher
pH M M hvdrochloric
