In the reaction: CH3I (aq) + NH2

-
(aq) → CH3NH2 (aq) + I- (aq), when the NH2
- concentration
alone was doubled, the rate doubled; when the CH3I concentration alone was increased by
1.5, the rate increased by 1.5 times. Write the rate law for the reaction

CH3I (aq) + NH2-(aq) → CH3NH2 (aq) + I- (aq)

rate = k(CH3I)(NH2-)
rate is 1st order in CH3I and 1st order in NH2^-