Multiple Choice QuestionsIn which of the following equilibrium Kc and Kp are not equal?
2NO (g) ⇌ N2 (g) + O2 (g)
SO2 (g) + NO2 (g) ⇌ SO3 (g) + NO (g)
H2 (g) + I2 (g) ⇌ 2 HI (g)
H2 (g) + I2 (g) ⇌ 2 HI (g)
In a buffer solution containing an equal concentration of B- and HB, the Kb for B- is 10-10.The pH of buffer solution is
10
7
6
6
The reaction,
2A (g) + B (g) ⇌ 3C (g) + D (g)
is begun with the concentrations of A and B both at an initial value of 1.00 M. When equilibrium is reached, the concentration of D is measured and found to be 0.25 M. The value for the equilibrium constant for this reaction is given by the expression
[(0.75)3 (0.25)] / [(1.00)2 (1.00)]
[(0.75)3 (0.25) ] / [(0.50)2(0.75)]
[(0.75)3(0.25)] / [(0.50)2(0.75)]
[(0.75)3(0.25)] / [(0.50)2(0.75)]
The ionisation constant of ammonium hydroxide is 1.77 x 10-5 at 298 K. Hydrolysis constant of ammonium chloride is
5.65 x 10-10
6.50 x 10-12
5.65 x 10-13
5.65 x 10-13
A.
5.65 x 10-10
Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO3 and Conc. H2SO4.In the mixture, nitric acid acts as a/an:
reducing agent
acid
base
base
The dissociation constants for acetic acid and HCN at 25o C are 1.5 X 10-5 and 4.5 x 10-10 respectively. The equilibrium constant for the equilibrium,
CN- + CH3COOH and HCN + CH3COO-
would be
3 x 105
3.0 x 10-5
3.0 x 10-4
3.0 x 10-4
Equal volumes of three acid solutions of pH 3.4 and 5 are mixed in a vessel. What will be the H+ ion concentration in the mixture?
1.11 x 10-4 M
3.7 x 10-4 M
3.7 x 10-3 M
3.7 x 10-3 M
If the concentration of OH- ions in the reaction Fe(OH)3 (s) ⇌ Fe3+ (aq) + 3OH-(aq) is decreased by 1/4 times, then equilibrium concentration of Fe3+ will increase by
8 times
16 times
64 times
64 times
Base strength of 
is in the order of
(2) > (1) > (3)
(3) > (2) > (1)
(1) > (3)> (2)
(1) > (3)> (2)
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