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Order of reaction from how the rate changes with concentration

This type of question, asked 3 times: 11 May 2024 S2, 20 Apr 2025 S2, 14 May 2026 S1. All 3 questions below, oldest first.

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  1. Question 1

    11 May 2024 S2

    76
    For a reaction A+B⟶A + B \longrightarrow product, if [A]\lbrack A\rbrack is doubled keeping [B]\lbrack B\rbrack constant, the rate of reaction doubles. Calculate the order of reaction with respect to A .

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  2. Question 2

    20 Apr 2025 S2

    58
    If concentration of reactant ' A ' is increased by 10 times, rate of reaction increases 100 times. What is order of reaction if rate law is =k[A]x=k\lbrack A\rbrack^{x} ?

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  3. Question 3

    14 May 2026 S1

    27
    If for a reaction, A+B→C+DA + B \rightarrow C + D, when [A][A] alone is doubled, the rate gets doubled and when [B][B] alone is increased by 99 times, the rate gets tripled. Find the order of reaction.

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