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When the rate law is rate = k[A][B]: which change doubles the rate

The same question, asked 2 times: 14 May 2024 S2, 22 Apr 2025 S1. Every wording below, oldest first.

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  1. Question 1

    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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  2. Question 2

    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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