A gaseous reaction has the rate law
rate = k[A]^2[B]
Termolecular collisions are rarely observed, so chemists consider alternative one-step stoichiometries that could still produce the measured rate law. Which proposed elementary step is most consistent with the data and avoids invoking a termolecular collision?
a) A+A+B→products
b) A+AB→products
c) A2+B→products
d) A+B→products