When initial concentration of the reactant is doubled, the half-life period of a zero order reaction?

When initial concentration of the reactant is doubled, the half-life period of a zero order reaction is doubled. The half-life period of a zero order reaction is given by the expression t1/2=[A0]/(2k) The initial concentration of the reactant is doubled. [A]'0=2[A]0 (1) t'1/2=[A'0]/(2k) (2) Substitute equation (1) in equation (2) t'1/2=(2[A]0)/(2k) t'1/2=2*[A0]/(2k) But [A0]/(2k)=t1/2 Hence t'1/2=2t1/2 The half-life period of a zero order reaction is doubled.