Q.5 Express the relationship between degree of dissociation of an
electrolyte and its molar. Conductivity. (1 mark)
Q.6 What for are quaternary ammonium salts
widely used? (1 mark)
Q.7 What is meant by Faraday constant? (1
mark)
Q.8 Define the "Ligand". Give an
example also. (1 mark)
Q.9 Give an example of the compound in which
hydrogen bonding results in the formation of adimer. (1 mark)
Q.10 Write an general formula by which the
electronic configurations of the transitions element is represented. (1
mark)
Q.11 Calculate the uncertainty in the
position of an electron if the uncertainty in its velocity is 5.7 x
105 ms-1. (h = 6.6 x 10-34 Js and mass of
electron = 9.1 x 10-31kg) (1 mark)
.
Q.12 (i) What is the basic building unit of
silicates?
(ii) Draw the structure of asbestos (a silicate containing
SiO2-3 anions).
(2 marks)
Q.13 State Rault's law. Discuss the factors
responsible for the deviation from this low. (2 marks)
Q.14 Calculate the molarity and molality
of a 15% solution (by weight) of sulphuric acid of density 1.020 g
cm-3. (Atomic masses : H = 1, O = 16, S = 32 amu) (2
marks)
Q.15 Derive the following equation : (2
marks)
D H = DE + ( Dn) RT
Q.16 A first order reaction is 15% complete
in 20 minutes. How long will it take to be 60% complete. (2
marks)
Q.17 Calculate the potential of a zinc-zinc
ion electrode in which the zinc ion activity is 0.001
M.
(EoZn2+/Zn. = -- 0.76 V, R = 8.314
JK-1 mol-1, F = 96,500 mol-1) (2 marks
)
Q.18 Nitric oxide reacts with hydrogen to
give nitrogen and water.
2 NO + 2 H2 --> N2 +
2 H2O
The kinetics of this reaction is explained by the
following steps :
(i) 2 NO + 2 H2 --> N2 + 2
H2O (slow)
(ii) H2O2 + H2 --> 2
H2O (fast)
What is the predicted rate low ? (2
marks)
Q.19 Write the IUPAC names of the following
compounds.
(i)
(ii)
Q.20 Write the reaction involved in the
preparation of benzene daizonium chloride. What happens when benzene
daizonium chloride reacts with (i) Cu2Cl2 and (ii)
phenol ?(Given equation for the reaction) (2 marks)
