The following questions refer to the gas-phase decomposition of ethylene chloride.
C2H5Cl  products
Experiment shows that the decomposition is first order.
The following data show kinetics information for this reaction:


Time (s) ln [C2H5Cl] (M)
1.0 – 1.625
2.0 –1.735





47. What is the rate constant for this decomposition?
A) 0.29/s
B) 0.35/s
C) 0.11/s
D) 0.02/s
E) 0.22/s