Chapter 21, Problem 98A

Interpretation Introduction

Interpretation: The reactions in which reactants are favored over products need to be identified.

Concept Introduction: For any equilibrium reaction, if the equilibrium constant is more than 1, products are favored and if the equilibrium constant is less than 1, reactants are favored.

Explanation of Solution

Reason for correct option/s:

In option (a), the given value of the equilibrium constant is 0.006. Since, it is less than 1 or $K_{\text{eq}}<1$ , reactants are favored over products. Thus, option (a) is correct.

In option (c)¸ the given value of the equilibrium constant is $8\times {10}^{-4}$ . Since, it is less than 1 or $K_{\text{eq}}<1$ , reactants are favored over products. Thus, option (c) is correct.

Conclusion

Reason for incorrect option/s:

In option (b), the given value of the equilibrium constant is 5.3. Since, it is more than 1 or $K_{\text{eq}}>1$ , products are favored over reactants. Thus, option (b) is incorrect.

In option (d), the given value of the equilibrium constant is $2\times {10}^3$ . Since, it is more than 1 or $K_{\text{eq}}>1$ , products are favored over reactants. Thus, option (d) is incorrect.