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Chemistry Question on Solubility Equilibria Of Sparingly Soluble Salts

In which one of the following equilibria ΔngΔn_g value is zero?

A

2NOCI(g)⇌2NO(g)+Cl2(g)2NOCI(g) ⇌ 2NO(g) + Cl_2(g)

B

Ni(s)+4CO(g)⇌Ni(CO)4(g)Ni(s)+4CO(g) ⇌ Ni(CO)_4 (g)

C

CO2(g)+C(s)⇌2CO(g)CO_2(g) + C(s) ⇌ 2CO(g)

D

H2(g)+Br2(g)⇌2HBr(g)H_2(g)+Br_2(g)⇌ 2HBr(g)

E

N2O4(g)⇌2NO2(g)N_2O_4(g) ⇌ 2NO_2(g)

Answer

Ni(s)+4CO(g)⇌Ni(CO)4(g)Ni(s)+4CO(g) ⇌ Ni(CO)_4 (g)

Explanation

Solution

The correct option is (B) : Ni(s)+4CO(g)⇌Ni(CO)4(g)Ni(s)+4CO(g) ⇌ Ni(CO)_4 (g)