" Q69.First order system is defined as: "

The momentum of a system is defined

The momentum of a system is defined

The half - life period of a first order reaction is 69.3 seconds. Its rate constant is _________.

Define order.

Define isolated system.

Define an expression for the rate constant of a 1st order reaction. Define half life period. A first order reaction takes 69.3 minutes for 50% completion. How much time will be needed for 80% completion?