A first order reaction takes 69.3 minutes for 50 % completion. How much time will be needed for

step 1 Since first order reaction takes 69 .3 minutes for 50 % completion, that is half of the initial

A first order reaction takes 69.3 minutes for 50 %...

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

First Order Reaction Kinetics

This concept refers to reactions whose rate is directly proportional to the concentration of one reactant. In first order kinetics, the reaction rate can be described by a differential equation that, upon integration, shows how the reactant concentration decays exponentially over time. This forms the basis for analyzing how reactant concentrations change with time in various chemical systems.

Half-life

Half-life is defined as the time required for a reacting species to decrease to half of its initial concentration. In first order reactions, the half-life is constant and does not depend on the initial concentration, making it a useful parameter for characterizing the speed of the reaction. It is mathematically linked to the rate constant through the relation t1/2 = ln(2)/k.

Integrated Rate Law

The integrated rate law is an equation that relates the concentration of a reactant to time for reactions of a given order. For first order reactions, the integrated rate law is typically expressed as ln([A]0/[A]) = kt, where k is the rate constant. This equation allows for the calculation of the time required to reach a particular extent of reaction by connecting concentration changes with time through a logarithmic relationship.

Transcript

Please give Ace some feedback