PYQ Vault
EbooksTutor

Rate constant when the reaction is first order in A and zero order in B

The same question, asked 2 times: 14 May 2024 S1, 15 Apr 2026 S1. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    14 May 2024 S1

    71
    The rate for reaction 2A+B→2\text{A}+\text{B}\rightarrow product is 6×10−4 mol dm−3s−16\times10^{-4}\,\text{mol dm}^{-3}\text{s}^{-1}. Calculate the rate constant if the reaction is first order in A and zeroth order in B. [Given [A]=[B]=0.3 M[\text{A}]=[\text{B}]=0.3\,\text{M}]

    Tap an option to check your answer.

  2. Question 2

    15 Apr 2026 S1

    28
    The rate of the reaction 2A+3B→2C+D2A + 3B \rightarrow 2C + D is 6×10−4 mol dm−3 s−16 \times 10^{-4}\ \mathrm{mol\ dm^{-3}\ s^{-1}}, when [A]=[B]=0.3 mol dm−3[A] = [B] = 0.3\ \mathrm{mol\ dm^{-3}}. If the reaction is of first order for A and zeroth order for B, then find the rate constant.

    Tap an option to check your answer.