Question

Is it possible for this equation

2C + D = E + F

to have a rate law of

rate = k [C]^2[D]^3

Answer 1

Of course. The rate law is determined experimentally and has nothing to do with the coefficients in the balanced chemical equation.

Answer 2

Really? How would the mechanism look like?

Answer 3

http://en.wikipedia.org/wiki/Rate_equation