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How the rate changes when concentrations change, for a given rate law

This type of question, asked 7 times: 9 May 2023 S2, 15 May 2023 S2, 13 May 2024 S2, 14 May 2024 S2, 21 Apr 2025 S2, 22 Apr 2025 S1, 15 May 2026 S2. All 7 questions below, oldest first.

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  1. Question 1

    9 May 2023 S2

    65
    The reaction 2A+B+C→D+E2\mathrm{A} + \mathrm{B} + \mathrm{C} \rightarrow \mathrm{D} + \mathrm{E} is found to be first order in A, second order in B and zero order in C. What is the effect of increasing concentration of all reactants twice?

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  2. Question 2

    15 May 2023 S2

    90
    For a reaction r=k[A][B]2r = k[A][B]^2, if concentration of AA is doubled the rate of reaction

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  3. Question 3

    13 May 2024 S2

    61
    For the reaction, CH3Br(aq)+OH−(aq)→CH3OH(aq)+Br−(aq)\text{CH}_3\text{Br(aq)}+\text{OH}^-\text{(aq)}\to\text{CH}_3\text{OH(aq)}+\text{Br}^-\text{(aq)}, The rate law is rate =k[CH3Br][OH−]=k[\text{CH}_3\text{Br}][\text{OH}^-]. What is change in rate of reaction if concentration of both reactants is doubled?

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  4. Question 4

    14 May 2024 S2

    86
    The rate law for the reaction A + B →\rightarrow product is rate =k[A][B]= k[A][B]. When will the rate of reaction increase by factor two?

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  5. Question 5

    21 Apr 2025 S2

    58
    Rate law for the reaction aA+bB→cC+dDaA + bB \rightarrow cC + dD is r=k[A][B]r = k\lbrack A\rbrack\lbrack B\rbrack. Which from following conditions does NOT affect the rate of reaction?

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  6. Question 6

    22 Apr 2025 S1

    68
    Rate law for the reaction aA+bB→cC+dDaA + bB \rightarrow cC + dD is r=k[A][B]r=k\lbrack A\rbrack\lbrack B\rbrack, the rate of reaction doubles if

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  7. Question 7

    15 May 2026 S2

    26
    How is the rate of second order reaction affected when the concentration of the reactant is increased by 22 times its initial value ?

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