PUC Karnataka Science Class 12Department of Pre-University Education, Karnataka
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# Solution - In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction. - PUC Karnataka Science Class 12 - Chemistry

#### Question

In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction.

#### Solution

k=2.303/tlog_10"[A]_@/[A]_t

k=2.303/tlog_10"100/40

k=2.303/45log_10"100/40

k=2.303/45log_10"2.5

k=2.303/45*0.3979

k=0.0204"min"^-1

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#### APPEARS IN

2015-2016 (March) (with solutions)
Question 3.2.5 | 2 marks

#### Reference Material

Solution for question: In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction. concept: Factors Influencing Rate of a Reaction. For the courses PUC Karnataka Science, CBSE (Science), HSC Science (General) , HSC Science (Computer Science), HSC Science (Electronics)
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