For a certain reaction of order n, the time for half change, ${\mathrm{t}}_{1/2},$ is given  by ${\mathrm{t}}_{1/2}=\frac{\left[2-\sqrt{2}\right]}{\mathrm{K}}\times {\mathrm{C}}_0^{1/2}$ where k is the rate constant and C0 is the initial concentration what is n