Match the half-life of the reaction in List-I with the integrated rate equation in List-II (a = initial concentration of reactant and a-x = concentration of reactant at time ‘t’.)

	List-I		List-II
P)	$t_{1/2}=\frac{0.586}{k}\sqrt{a}$	1)	$k=\frac{x}{t}$
Q)	$t_{1/2}=\frac{0.693}{k}$	2)	$k=\frac{1}{t}[\frac{1}{a-x}-\frac{1}{a}]$
R)	$t_{1/2}=\frac{a}{2k}$	3)	$k=\frac{2}{t}[\sqrt{a}-\sqrt{a-x}]$
S)	$t_{1/2}=\frac{1}{ka}$	4)	$k=\frac{2.303}{t}\log \frac{a}{a-x}$
		5)	$k=\frac{2}{t}[\frac{1}{\sqrt{a-x}}-\frac{1}{\sqrt{a}}]$