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NEET-XII-Chemistry

04: Chemical Kinetics

 page 2
Qstn# II-8-i Prvs-QstnNext-Qstn
  • #8-i
    Calculate the average rate of reaction between the time interval 30 to 60 seconds.
    () Calculate the pseudo first order rate constant for the hydrolysis of ester.
    Ans : Average rate of reaction between the time interval, 30 to 60 seconds,



    = 4.67 × 10-3 mol L-1 s-1
    () For a pseudo first order reaction,



    For t = 30 s,

    = 1.911 × 10-2 s-1

    For t = 60 s,

    = 1.957 × 10-2 s-1

    For t = 90 s,

    = 2.075 × 10-2 s-1

    Then, average rate constant,


  • #8-ii
    Calculate the pseudo first order rate constant for the hydrolysis of ester.
    Ans : For a pseudo first order reaction,



    For t = 30 s,

    = 1.911 × 10-2 s-1

    For t = 60 s,

    = 1.957 × 10-2 s-1

    For t = 90 s,

    = 2.075 × 10-2 s-1

    Then, average rate constant,