Order of a reaction can be — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

I need to see the options to provide a complete answer, but I can explain the general concept of reaction order: **The order of a reaction can be:** 1. **Zero** – Rate is independent of concentration: $\text{Rate} = k$ 2. **Positive integer** (1, 2, 3, ...) – Rate depends on integer powers of concentration: $\text{Rate} = k[A]^n$ 3. **Fractional** – Rate depends on non-integer powers: $\text{Rate} = k[A]^{1/2}$ (common in complex mechanisms) 4. **Negative** – Rate decreases with increasing concentration (rare, occurs in some reactions with inhibitors) **Key point:** Order is determined experimentally and depends on the reaction mechanism, NOT stoichiometry. The sum of exponents in the rate law gives the overall order. Without seeing option D specifically, the correct answer likely states that reaction order can be: - **A fraction/decimal number** (like 1/2, 3/2) - **Any positive or negative number** (including zero) - **Determined experimentally only** If D says "any positive or negative number including zero" or "fractional," that would be correct because we observe reactions with half-order, zero-order, and even negative-order kinetics in reality. **Could you provide the options** so I can confirm why D is correct and address why A, B, C are incorrect?