NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

1 Hard

1 of 1

Analyzing +4 | -1

A first order reaction has the rate constant,

{k}=4.6 \times 10^{-3} \, \mathrm{s}^{-1}

. The number of correct statement/s from the following is/are _____

Given:

\log 3=0.48

A. Reaction completes in

1000 \, \mathrm{s}

.
B. The reaction has a half-life of

500 \, \mathrm{s}

.
C. The time required for

10 \%

completion is 25 times the time required for

90 \%

completion.
D. The degree of dissociation is equal to

\left(1-e^{-k t}\right)

E. The rate and the rate constant have the same unit.

View answer and explanation

Correct option: A

Option A (1) is correct because only statement D is correct. The degree of dissociation is indeed equal to (1 - e^(-kt)).

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