Question

The gas phase decomposition of dimethyl ether at 500^oC

CH₃OCH₃(g) à CH₄(g) + H₂(g) + CO)g)

is first order in CH₃OCH₃ with a rate constant of 4.00 x 10^-4 s^-1. If an experiment is performed in which the initial concentration of CH₃OCH₃ is 4.56 x 10^-2 M, what is the concentration of CH₃OCH₃ after 4879 s have passed?

a)0.0321 M

b) 0.0191 M

c) 0.00539 M

d) 0.0149 M

e) 0.00648 M

Answer 1