Question

Which of the following equation exhibits integrated rate law equation for first order reaction?

• A. $\text{k} = \frac{[\text{A}]_0 - [\text{A}]_t}{t}$
• B. $\text{k} = \frac{2.303}{t} \times \log \frac{\text{a}}{(\text{a}-\text{x})}$
• C. $k = \frac{1}{t} \ln \frac{(\text{a}-\text{x})}{\text{a}}$
• D. $\text{k} = \frac{1}{\text{t}} \times \frac{\text{x}}{\text{a}(\text{a}-\text{x})}$

Hint:

First order key form: $k = \frac{2.303}{t} \log \frac{a}{a-x}$

Answer 1

The Correct Option is B