13. The rate constant of a first order reaction is 6.8x10 s if the initial concentration of the reactant is 0.04 M, what is its molarity after 20 minutes? How long will it take for 25% of thereactant to react

13. The rate constant of a first order reaction is 6.8x10 s if the ini

1.	13. The rate constant of a first order reaction is 6.8x10 s if the initial concentration of the reactant is 0.04 M, what is its molarity after 20 minutes? How long will it take for 25% of thereactant to react
Answer» Explanation:The GASEOUS REACTION A2→ 2A is first order in A2. After 12.3 min 65% of A2 remains undecomposed. How long will it take to decompose 90% of A2? What is the half life of the reaction? Given-1)[A]0=100molL-1 & [A]t= 65, t= 12.3min , k = ? 2) [A]t = 100-90= 10, t=? t1/2=?