What would be the value of ∆n_g for the reaction NH₄CI(s) ⇌ NH₂(g) + HCI(g)?

(a)

1

(b)

0.5

(c)

2

(d)

1.5

At 500K, equilibrium constant K_c for the following reaction is 5, \(\frac { 1 }{ 2 } { H }_{ 2 }(g)+\frac { 1 }{ 2 } { I }_{ 2 }(g)\leftrightharpoons { H }I(g)\) what would be the equilibrium constant Kc for the reaction 2HI(g) ⇌ H₂(g) + I₂(g)

(a)

0.44

(b)

0.04

(c)

25

(d)

2.5

For the reaction 2NO₂(g) ⇌ 2NO(g) + O₂(g), K_c = 1.8 x 10^-6 at 185°C. At the same temperature the value of K_c for the reaction. NO(g) + \(\frac{1}{2}\) O₂ ⇌ NO₂(g) is__________.

(a)

0.9 x 10⁶

(b)

7.5 x 10²

(c)

1.95 x 10^-3

(d)

1.95 x 10³

Which of the following reaction will be favoured at low pressure?

(a)

N₂ + O₂ ⇌ 2NO

(b)

H₂ + I₂ ⇌ 2HI

(c)

PCl₅ ⇌ PCl₃ + Cl₂

(d)

N₂ + 3H₂ ⇌ 2NH₃

Consider the reaction CaCO₃(s) ⇌ CaO(s) + CO₂(g) is a closed container at equilibrium. What would be the effect of addition of CaCO₃ on the equilibrium?

(a)

increases

(b)

remains unaffected

(c)

decreases

(d)

unpredictable