A reaction is of first order when — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

I don't see the answer options (A, B, C, D) in your question. Could you please provide the complete options for this first-order reaction question? Once you share them, I'll explain why option C is correct and address why the others are incorrect. However, here are the **key characteristics of a first-order reaction** to help you identify the correct answer: A reaction is first-order when: - The rate depends on the **first power of one reactant concentration**: $\text{Rate} = k[A]^1$ - The **integrated rate law** is: $\ln[A] = -kt + \ln[A]_0$ - A plot of $\ln[A]$ vs. $t$ gives a **straight line** with slope $= -k$ - The **half-life is constant** and independent of initial concentration: $t_{1/2} = \frac{0.693}{k}$ - Units of rate constant: $s^{-1}$ (time⁻¹) Please share the options so I can confirm why C is the correct choice!