Question

A certain substance A is mixed with
equimolar quantity of substance B.
At the end of an hour, A is 75% reacted.
Calculate the time when A is 10% underacted.
Given: order of reaction is zero.)

Answer 1

Answer:

Explanation:

According to zero order reaction:

x=kt      ( x = amount of reactant reacted)

75=k×1 and

90=k×t

So  t=90/75=1.2 hr