Now the units for the ray constant K can be determined by first calculating the overall order. Now our overall order uses the variable N. It's a numerical value calculated from the addition of all reaction orders and here the formula to figure out the units for your ray constant.
K is K = m 2 N + 1 × time ⁻ 1 . So remember K is your weight constant capital, M is your molarity, and N again is your overall order. So adding up all the orders of your rate law helps you to figure out N. Take that and plug it into this formula and you'll know what the units for K will be.