The half-life of a first-order reaction is `1.5` hours. How much time is needed for `94%` of the reactant to change to product?

Half life of a first order reaction is 2 hours , what time is required for 90% of the reactant to be consumed ?

The half life of a first order reaction is 60 min . How long will is take to consume 90% of the reactant?

The half life of a first order reaction is 60 min . How long will is take to consume 90% of the reactant?

The half-life of a first order reaction is 30 min. How long would be required for 25% of the reactant to be decomposed ?

Derive an expression for the relation between half life and rate constant for first order reaction. The half life period for first order reaction is 1.7 hrs. How long will it take for 20% of the reactant to disappear?