"A reaction is second order respect to the reactant A. If the reaction is 85% complete in 12 minutes, how long would it take for the reaction to be 15% complete?"

0.3738 min

Explanation:

Integrated rate law for second order kinetics is:

Where, is the final initial concentration

is the initial concentration

k is the rate constant

t is the time

Given that:-

85% is complete which means that 0.85 of is decomposed. So,

= 1 - 0.85  =

t = 12 minutes

   -  1

Also,  

15 % is complete which means that 0.15 of is decomposed. So,

= 1 - 0.15  =

t = ?

Applying value from 1

2b2t

explanation:

2b2t