Question

A 0.75 M initial concentration of a reactant is used up in a zero-order reaction. If the rate constant k is 0.015 M/min, (a) What will be the concentration of the reactant after 5 minutes? (b) How long will it take the concentration to be reduced to 0.06 M?

Answer 1

After 5min concentration will be $=0.015×5=0.075M$

$0.75- 0.06= 0.69M$

Time taken $= \frac{0.69}{0.015}=46min$