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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEC
Chapter: Chemical Kinetics

Olympiad workbook · NSEC · Chemical Kinetics

A toxic element is to be removed from drinking water by adsorption...

A toxic element is to be removed from drinking water by adsorption on activated charcoal. At low concentrations, the rate constant for adsorption is

1.8 \times 10^{-5} \mathrm{~s}^{-1}

. The time required to reduce the concentration of the toxic element to

10 \%

of its initial concentration is

Options

A $1.28 \times 10^5 \mathrm{~s}$
B $5.85 \times 10^3 \mathrm{~s}$
C $1.28 \times 10^6 \mathrm{~s}$
Dcannot be calculated from the given data.

Correct answer

A. $1.28 \times 10^5 \mathrm{~s}$

Step-by-step solution

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