The rate constant of a second order reaction 2A → Z is k2. If the initial concentration of the reactant is a0 and the concentration of the product at time t is x, then a linear function of t with the slope k2a0 is
1
\(\rm\ln \left(\frac{x}{a_0−x}\right)\)
2
\(\rm\frac{x}{a_0(a_0−x)}\)
3
\(\rm\frac{x}{a_0−x}\)
4
\(\rm\ln \left(\frac{x}{a_0(a_0−x)}\right)\)