In a first order reaction, the concentration of the reactants is reduced to `25%` in one hour. The half-life period of the reactions is

Question

In a first order reaction, the concentration of the reactants is reduced to `25%` in one hour. The half-life period of the reactions is

In a first order reaction, the concentration of the reactants is reduced to `25%` in one hour. The half-life period of the reactions is
A. 2 hrs
B. 2hrs
C. `1//2` hrs
D. `1//4` hrs

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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

Salim Ahmed Kawsar

Correct Answer - C
`k=(2.030)/(t)log.((a)/(a-x))`
`k=(2.303)/(1) log. ((100)/(5))=2xx0.693`
`t_(1//2)=(0.693)/(k)=(0.693)/(2xx0.693)=(1)/(2)hr`

5 views Answered 2023-02-05 15:29