Question

The reaction A → B + C has a rate law, Rate = k[A]. If the first half life of the reaction is found to be 48 s, what is the length of the fifth half-life?

Answer 1

Answer:

48s

Explanation:

The rate is proportional to [A]^1, so it is a first order reaction.

First order reactions have a constant half life of  $\frac{ln2}{k}$ .

So in your question it will remain same regardless of the time passed and quantity remained.