Time required to decompose {SO₂Cl₂ to half ...

NCERT Class XII Chemistry
Chapter - Chemical Kinetics
Questions with Solutions

Question : 36 of 39

Marks: +1, -0

Time required to decompose

\mathrm{SO_2Cl_2}

to half of its initial amount is 60 minutes. If the decomposition is a first order reaction, calculate the rate constant of the reaction.

Solution:

For a first order reaction,

k=\frac{0.693}{t_{1/2}}

=\frac{0.693}{60}

=1.155 \times 10^{-2} \, \text{min}^{-1}

or,

k=\frac{0.693}{60 \times 60}

=1.925 \times 10^{-4} \, \text{s}^{-1}

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