The concentrations of a species A undergoing the reaction A → P is 1.0, 0.5, 0.33, 0.25 mol dm ${ }^{-3}$ at $\mathrm{t}=0,1,2$ and 3 seconds, respectively. The order of the reaction is:
(a)two
(b)one
(c)zero
(d)three
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
1/[A] = 1, 2, 3, 4 at t = 0, 1, 2, 3 s — linear in t, the signature of second order.