Question

Classify the following equilibrium reactions into homogeneous and heterogeneous

• A. $2N{O}_2\left(g\right)\rightleftharpoons 2N_2\left(g\right)+O_2\left(g\right)$
• B. $2N{H}_3\left(g\right)\rightleftharpoons N_2\left(g\right)+3H_2\left(g\right)$
• C. $2Cu\left(N{O}_3\right)\left(s\right)\rightleftharpoons 2CuO\left(s\right)+4N{O}_2\left(g\right)$
• D. $PC{I}_5\left(g\right)\rightleftharpoons PC{I}_3\left(g\right)+C{I}_2\left(g\right)$

Answer 1

The correct option is C $2Cu\left(N{O}_3\right)\left(s\right)\rightleftharpoons 2CuO\left(s\right)+4N{O}_2\left(g\right)$

Homogeneous reactions are those in which reactants and products have same phase i.e either gas,liquid or solid.

Heterogeneous reactions are those in which reactants and products are in different phase.

in A option ,both reactants and products are in gaseous phase, thus homogeneous.

In B option,both,reactants and products are in gaseous phase, thus homogeneous.

in C option,reactants are in solid as well as gas state .Thus heterogeneous.

in D option,,both reactants and products are in gaseous phase, thus homogeneous.