Ina first order reaction the concentration of reactant decrease from 800 mol-dm3to 50 mo-dm3 in 2-104sec- The rate constant of reaction in sec-1 is-

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Standard XII

Chemistry

Isomerism

Ina first ord...

Question

In a first order reaction the concentration of reactant decrease from 800 mol/dm³ to 50 mo/dm³ in 2×10⁴ sec. The rate constant of reaction in sec^-1 is:

2×10⁴

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3.45×10^-5

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1.386×10^-4

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2×10^-4

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Solution

The correct option is C
1.386×10^-4

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(IIT-JEE, 2003)

In a first order reaction the concentration of reactant decreases from $800 m o l / d m^{3}$ to $50 m o l / d m^{3}$ in $2 \times 10^{4} s$ . The rate constant of reaction in $s^{- 1}$ is:

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In a first order reaction the concentration of reactant decrease from 800 mol/dm3 to 50 mo/dm3 in 2×104 sec. The rate constant of reaction in sec-1 is:

The correct option is C 1.386×10-4

In a first order reaction the concentration of reactant decrease from 800 mol/dm³ to 50 mo/dm³ in 2×10⁴ sec. The rate constant of reaction in sec^-1 is:

The correct option is C
1.386×10^-4