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JEE Main202118 Mar 2021Evening ShiftChemistryChemical KineticsActual

A reaction has a half life of 1 min . The time required for 99 . 9 % completion of the reaction is ___ min. (Round off to the Nearest integer) [Use : ln 2 = 0 . 69 , ln 10 = 2 . 3 ]

Correct answer

0

Step-by-step solution

t 99 . 9 % t 50 % = 1   K ln 100 0 . 1 1   K ln 2 = ln 1000 ln 2 × t 50 % = 3 ln 10 ln 2 × 1 = 3 × 2 . 3 0 . 69 = 10

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