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For the reaction R to P, the concentrati...

For the reaction `R to P`, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes. Calculate average rate of reaction.

Text Solution

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Formula :
Average rate ` = - (Delta|R|)/(Deltat) = (-[-0.02 - 0.03])/(25) = 4 xx 10^(-4) "mol "L^(-1) min^(-1)`
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Knowledge Check

  • The concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes . The average rate of reaction using time in seconds is :

    A
    `0.4xx10^(-3) "mol L"^(-1) s^(-1)`
    B
    `0.024 "mol" L^(-1)s^(-1)`
    C
    `0.24 "mol " L^(-1)s^(-1)`
    D
    `0.66xx10^(-4) "mol"L^(-1) s^(-1)` .

  • For a first order reaction (A) rarr products the concentration of A changes from 0.1 M to 0.025 M in 40 minutes . The rate of reaction when the concentration of A is 0.01 M is :

    A
    `1.73xx10^(-4) M//min`
    B
    `1.73xx10^(-5)` M/min
    C
    `3.47xx10^(-4)` M/min
    D
    `3.47 xx10^(-5)` M/min

  • In a first order reaction the concentration of the reactant decreases from 0.8 to 0.4 M in 15 minutes . The time taken for the concentration to change from 0.1 M to 0.025 M is :

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    B
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    C
    c) 30 mins
    D
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