In the system; \(Fe\left( OH \right) _{ 3\left( s \right) }\rightleftharpoons { Fe }_{ \left( aq \right) }^{ 3+ }+{ 3OH }_{ \left( aq \right) }\) decreasing the conc. of OH^-ions \(\cfrac { 1 }{ 3 } ^{ - }\)times will cause the equilibrium cone, of Fe³⁺ to increase_____________ times

(a)

27

(b)

9

(c)

18

(d)

3

For the reaction \(CO_{ \left( g \right) }+2H_{ 2\left( g \right) }\rightleftharpoons { CH }_{ 3 }{ OH }_{ \left( g \right) }\) If active mass of CO is kept constant and active mass of H₂ is tripled, the rate of forward reaction will become ____________

(a)

Three times

(b)

Six times

(c)

Eight times

(d)

Nine times

For the homogeneous gas reaction at 600K \(4NH_{ 3\left( g \right) }+5{ O }_{ 2\left( g \right) }\rightleftharpoons 4NO_{ \left( g \right) }+6{ H }_{ 2 }{ O }_{ \left( g \right) }\) The unit of equilibrium constant K" is

(a)

(mol dm^-3)^-1

(b)

(mol dm^-3)

(c)

(mol dm^-3)¹⁰

(d)

(mol dm-³)⁹

The equilibrium \({ A }_{ \left( g \right) }+4B_{ \left( g \right) }\rightleftharpoons AB_{ 4\left( g \right) }\) attained by mixing equal moles of A and B in a one litre vessel. Then at equilibrium _____________

(a)

[A] = [B]

(b)

[A] > [B]

(c)

[A] < [B]

(d)

[AB₄] > [A]

If Ar is added to the equilibrium
\({ N }_{ 2g }+{ 3H }_{ 2\left( g \right) }\rightleftharpoons { 2NH }_{ 3 }\) at constant volume, then equilibrium will _____________

(a)

Shift in forward direction

(b)

Not shift in any direction

(c)

Shift in reverse direction

(d)

All are incorrect