The rate constant for a first order reaction is 20 min–1. The time required for the initial concentration of the reactant to reduce to its 32 1 level is _________ × 10–2 min. (Nearest integer) (Given

Question

The rate constant for a first order reaction is 20 min–1. The time required for the initial concentration of the reactant to reduce to its 32 1 level is _________ × 10–2 min. (Nearest integer) (Given : ln 10 = 2.303, log2 = 0.3010)

Prashant Kotian · Accepted Answer

Correct answer: .. k . t /  = 693 . = 0.03465 min              1 1 n 2 1       No. of Half life = 5 Time required = 0.03465  5 = 0.17325 min = 17.325 × 10–2 min. | JEE(Main) 2023 | DATE : 31-01-2023 (SHIFT-2) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 10

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