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QJEEM23Chf930: JEE Main 2023 Chemistry - Class 12 JEEM23Chf930 Solution: If compound A reacts with B following first order kinetics with …

If compound A reacts with B following first order kinetics with rate constant 2.011×10−3 s−1. The time taken by A (in seconds) to reduce from 7 g to 2 g will be ___________. (Nearest Integer)

[log⁡5=0.698,log⁡7=0.845,log⁡2=0.301]

Step-by-Step Verified Solution

t=2.303klog⁡C0Ct

=2.3032.011×10−3log⁡72

=2.303×1032.011(.845−.301)

=622.99

≈623 sec.

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