For a reaction of n^th order when graph is plotted between ${\log }_{10}\left(\frac{\mathrm{dx}}{\mathrm{dt}}\right)\text{ vs }{\log }_{10}(\mathrm{a}-\mathrm{x}{)}^{\mathrm{n}}$ then a straight line was obtained with y intercept equals to 0.6020. Rate const is ____ lit^n-1mole^1-n t ^-1