Law of mass action is applicable to

Options

A. Homogeneous chemical equilibria only
B. Heterogeneous chemical equilibria only
C. Physical equilibria
D. Both homogeneous and heterogeneous chemical equilibrium

Answer

**Step-by-Step Solution:**

1. **Understanding the Law of Mass Action**:
The Law of Mass Action states that the rate of a chemical reaction is directly proportional to the product of the concentrations (or masses) of the reactants, each raised to the power of their respective stoichiometric coefficients in a balanced chemical equation.

2. **Application of the Law**:
The law is applicable to both homogeneous and heterogeneous equilibria. Homogeneous equilibrium refers to reactions where all reactants and products are in the same phase (e.g., all gases or all liquids), while heterogeneous equilibrium involves reactants and products in different phases (e.g., a solid and a gas).

3. **Conclusion**:
Therefore, the Law of Mass Action is applicable to both homogeneous and heterogeneous chemical equilibria.

4. **Final Answer**:
The correct answer is that the Law of Mass Action is applicable to both homogeneous and heterogeneous chemical equilibrium.