In a 1st order reaction, reactant concentration C varies with time t as :
The rate constant for a first order reaction whose half-life, is 480 seconds is :
In a first order reaction, the concentration of the reactant, decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is
A reaction proceeds by first order, 75% of this reaction was completed in 32 min. The time required for 50% completion is
The concentration of a reactant X decreases from 0.1 M to 0.005 M in 40 min. If the reaction follows first order kinetics, the rate of the reaction when the concentration of X is 0.01 M will be
If half-life of a substance is 5 yrs, then the total amount of substance left after 15 years, when initial amount is 64 g is
In a reaction, when the concentration of reactant is increased two times, the increase in rate of reaction was four times. Order of reaction is :
