Thermal decomposition of a compound is first order reaction . If a sample of compound decomposes 50 % in 120 minutes how much time it will take for 90

Question

Thermal decomposition of a compound is first order reaction . If a sample of compound decomposes 50 % in 120 minutes how much time it will take for 90

Thermal decomposition of a compound is first order reaction . If a sample of compound decomposes 50 % in 120 minutes how much time it will take for 90% decomposition ?
A. About 240 minutes
B. About 480 minutes
C. About 45 minutes
D. About 400 minutes

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 - D
`100 overset(120) to 50 overset(120) to 25 overset(120 ) to 12.5 overset(120 ) 6.25`
therefore , 10 % lies between 12.5 and 6.25 hence approximately 400 mintues .

5 views Answered 2023-02-05 15:29