is the time required for the reaction to undergo 87.5% completion and is the time required for the reaction to undergo 50% completion. The relation between and for a first order reaction is .

The

Question

is the time required for the reaction to undergo 87.5% completion and  is the time required for the reaction to undergo 50% completion. The relation between  and  for a first order reaction is .

The value of  is . (Nearest integer)

Canvas Classes · Accepted Answer

87.5% completion means 12.5% =  remains.

→ this takes 3 half-lives.

So

Answer: x = 3

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