(Solved): 2. Equal volumes of two equimolar solutions of reactants A and B are mixed and the reaction A+BC ...

2. Equal volumes of two equimolar solutions of reactants $\mathrm{A}$ and $\mathrm{B}$ are mixed and the reaction $A+B?C$ occurs. At the end of $1\mathrm{hr},\mathrm{A}$ is $75\%$ reacted. What percentage of $A$ will be left unreacted at the end of $3\mathrm{hr}$ if the reaction is: (a) First order in A and zero order in B (b) First order in A and first order in B