The reaction v1A+v2B⟶products is first-order with respect to A and zero-order with respect to B. If the reaction is started with [A]0and [B]0, the integrated rate expression of this reaction would be

A
$\ln \frac{[A]_{0}}{[A]_{0} - x} = k_{1} t$
B
$\ln \frac{[A]_{0}}{[A]_{0} - v_{1} x} = k_{1} t$
C
$\ln \frac{[A]_{0}}{[A]_{0} - v_{1} x} = v_{1} k_{1} t$
D
$\ln \frac{[A]_{0}}{[A]_{0} - v_{1} x} = v_{1} k_{1} t$
where x is the extent of reaction divided by constant volume.

We have

$- \frac{1}{v_{1}} \frac{d [A]}{d t} = k [A] i.e. \int_{[A]_{]}}^{[A]} \frac{d [A]}{[A]} = - v_{1} k \int_{0}^{l} d t$

$\ln \frac{[A]}{[A]_{0}} = - v_{1} k t or \ln \frac{[A]_{0}}{[A]_{0} - v_{1} x} = v_{1} k t$

The reaction $v_{1} A + v_{2} B ⟶$ products is first-order with respect to A and zero-order with respect to B. If the reaction is started with ${[A]}_{0}$ and ${[B]}_{0}$ , the integrated rate expression of this reaction would be