Answer
📘 Understanding the Rate Law
The general rate law is:
Rate = k [A]^2 [B]
- The units of Rate are always:
M/s(molarity per second). - [A]^2 has units of
M^2 - [B] has units of
M - Total concentration units in the denominator of k =
M^3
🧪 Solving for Units of k
k = Rate / ([A]^2 [B]) = (M/s) / (M^3) = M-2 s-1
✔️ Therefore, the correct units of k are: M-2·s-1
✅ Final Answer:
Correct Option: M-2·s-1