In a first order reaction the concentration of reactant decrease from 800 mol - dm 3 to 50 mo - dm 3 in 2 - 104 sec- The rate constant of reaction in sec -1 is-A- 2 - 104B- 3-45 - 10-5C- 1-386 - 10-4D- 2 - 10-4

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Standard XII

Chemistry

Half life

In a first or...

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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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