The Thermal Decomposition of Acetaldehyde, CH₃CHO  CH₄

The thermal decomposition of acetaldehyde, CH₃CHO  CH₄ + CO, is a second-order reaction. The following data were obtained at 518°C. Calculate the rate constant for the decomposition of acetaldehyde from the above data.

A) 2.2  10^-3/s
B) 0.70 mmHg/s
C) 2.2  10^-3/mmHg·s
D) 6.7  10^-6/mmHg·s
E) 5.2  10^-5/mmHg·s