问答题
Dinitrogen pentaoxide, N2O5, is the anhydride of nitric acid. It is not very stable, and in the gas phase or in solution with a nonaqueous solvent it decomposes by a first-order reaction into N2O4 and O2. The rate equation is
v=kc(N2O5)
At 45℃, the rate constant for the reaction in carbon tetrachloride is 6.22×10-4s-1. Ifthe initial concentration of the N2O5 in the solution is 0.100mol·dm-3, how many minuteswill it take for the concentration to drop to 0.0100 mol·dm-3?
A.22×10-4s-1.
B.100mol·dm-3,
C.0100