At , the half life for the decomposition of is 200 s and is independent of the initial concentration of . The time required for 80% of the to decompose is

(Given: ; )

Question

At , the half life for the decomposition of  is 200 s and is independent of the initial concentration of . The time required for 80% of the  to decompose is

(Given: ; )

Canvas Classes · Accepted Answer

Half life is independent of initial concentration → first order reaction.

, so

For 80% decomposition, 20% remains:

Answer: Option (3) — 467 s

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