Question

A certain sabstance a is mixed with an equal quantity of a sabstance b . at the end of 1 hour 75%a reacted . how much a will be left unreacted at the end of 2 hour if the reaction is of zero order in a and independent of b​

Answer 1

Answer:

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