If `50%` of the rectant is converted into a product in a first order reaction in 25 minutes, how much of it would react in 100 minutes?

Question

If `50%` of the rectant is converted into a product in a first order reaction in 25 minutes, how much of it would react in 100 minutes?

If `50%` of the rectant is converted into a product in a first order reaction in 25 minutes, how much of it would react in 100 minutes?
A. `93.75%`
B. `87.5%`
C. `75%`
D. `100%`

Monjur Alahi

6 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 - A
a) `t=(2.303)/k log (a)/(a-x)`
`loga/(a-x) = (kxxt)/(2.303) = (0.693xx100)/(25xx2.303) = 1.2`
`(a)/(a-x)= "Antilog" 1.2 = 15.8`
`(a-x) = a/(15.8)=100/(15.8)=100/(15.8)=6.329`
`x=100-6.329=93.67%`

6 views Answered 2023-02-05 15:29