Consider the nitration of benzene using mixed conc. H₂SO₄ and HNO₃. If a large amount

of KHSO₄ is added to the mixture, the rate of nitration will be

1. slower 

2. unchanged

3. doubled

4. faster

Consider the following liquid-vapour equilibrium

              Liquid $\rightleftharpoons$Vapour

Which of the following relations is correct?

1. 

2. 

3. 

4. 

If the value of an equilibrium constant for a particular reaction is 1.6 x 10¹², then at equilibrium the system will contain

1. 100% reactants

2. mostly reactants

3. mostly products

4.  reactants and products in ratio of 1:1

The Ksp of Ag₂CrO₄, AgCl, AgBr and Agl are, respectively, 1.1x10^-12, 1.8x10^-10, 5.0x10^-13, and 8.3x10^-17. The salt precipitates that last if the AgNO₃ solution is added to the solution containing equal moles of NaCl, NaBr, Nal and Na₂CrO₄ is -

Which of the following statements is correct for a reversible process in a state of

equilibrium?

1. ΔG = -2.30 RT logK

2. ΔG = 2.30 RT log K

3. ΔG° = -2.30 RT logK

4. ΔG° = 2.30 RT logK

The pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed is:

1. 12.65

2. 2.04

3. 7.01

4. 1.35

Among the following pairs of solution the one which is not an acidic buffer is:

1. HClO₄ and NaClO₄

2. CH₃COOH and CH₃COONa

3. H₂CO₃ and Na₂CO₃

4. H₃PO₄ and Na₃PO₄

If the equilibrium constant for N₂(g)+O₂(g)$\rightleftharpoons$2NO(g) is K, the equilibrium constant for

$\frac{1}{2}$N₂(g) + $\frac{1}{2}$O₂(g)$\rightleftharpoons$NO(g) will be,

1. K^1/2

2. $\frac{1}{2}K$

3. K

4. K²

For the reversible reaction, N₂(g) + 3H₂(g) — 2NH₃(g) + Heat the equilibrium shifts in

forward direction

1. By increasing the concentration of NH₃(g)

2. By decreasing the pressure

3. By decreasing the concentrations of N₂(g) and H₂(g)

4. By increasing pressure and decreasing temperature

For a given exothermic reaction, K_p and K'_p are the equilibrium constants at temperatures

T₁ and T₂ respectively. Assuming that heat of reaction is constant in a temperature range

between T₁ and T₂, it is readily observed that

1. K_p>K'_p                       

2. K_p<K'_p

3. K_p = K'_p                     

4. K_p = 1/K'_p