The decomposition reaction of N2O5 in carbon tetrachloride is 2 N2O5 -- 4 NO2 + O2. The

Question:

The decomposition reaction of N2O5 in carbon tetrachloride is 2 N2O5 --→ 4 NO2 + O2. The rate law is first order in N2O5. At the rate constant is 4.82 × 10-3 s-1.
(a) Write the rate law for the reaction.
(b) What is the rate of reaction when [N2O5] = 0.0240 M?
(c) What happens to the rate when the concentration of N2O5 is doubled to 0.0480 M?
(d) What happens to the rate when the concentration of N2O5 is halved to 0.0120 M?