Verified Solution • 2025–26 Session moderate

QJEEM23Chbe19: JEE Main 2023 Chemistry - Class 12 JEEM23Chbe19 Solution: For the first order reaction A B, the half life is 30 min. The…

For the first order reaction A →\to B, the half life is 30 min. The time taken for 75% completion of the reaction is _________ min. (Nearest integer)

Given : log 2 = 0.3010

log 3 = 0.4771

log 5 = 0.6989

Step-by-Step Verified Solution

Time taken for 75%75 \% completion

=2×t1/2=2 \times \mathrm{t}_{1 / 2}

=2×30=2 \times 30

=60 min=60 \mathrm{~min}

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