A first order reaction is 50% completed in `1.26 xx 10^(14)`s. How much time would it take for 100% completion ?

Question

A first order reaction is 50% completed in `1.26 xx 10^(14)`s. How much time would it take for 100% completion ?

A first order reaction is 50% completed in `1.26 xx 10^(14)`s. How much time would it take for 100% completion ?
A. `1.26 xx 10^(15)s`
B. `2.52 xx 10^(14) s`
C. `2.52 xx 10^(28)s`
D. Infinite

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Correct Answer - D
The time taken for half the reaction to complete i.e., the time in which the concentration of a reactant is reduced to half of its origianal value is called half- line period of the reaction.
But it is impossible to perform 100% of the reaction. whole of the substance new reacts because in very half - life, 50% of the substance reacts. Hence, time taken 100% completion of a reaction is infinite.