Given: A $\rightarrow$ P rate = k[A] If 20% of A reacts in 5.12 min,calculate the time required for 90% of A to react.

Question

Given: A $\rightarrow$   P rate = k[A] If 20% of A reacts in 5.12 min,calculate the time required for 90% of A to react.

Quizplus · Accepted Answer

The reaction follows first-order kinetics. The time required for a certain percentage of reaction can be calculated using the formula: $ t = \frac{2.303}{k} \log \frac{[A]_0}{[A]} $. Given that 20% reacts in 5.12 min, we can find the rate constant $ k $ and then use it to find the time for 90% reaction.

Given: A →\rightarrow→ P Rate = K[A] If 20% of a Reacts in a Reacts

Given: A $\rightarrow$ P Rate = K[A] If 20% of a Reacts in a Reacts