2A → B + 2C The rate constant od the reaction is 2.17 x 10$ s'. (a) Calculate the fraction of A remaining after it has been heated for 30 minutes. (b) What is the time (in mins) required for 50% of the sample to be decomposed under the same conditions? (Ans : 0.96 ; 532.26 mins)

2A → B + 2C The rate constant od the reaction is 2.17 x 10$ s'. (a) Calculate the fraction of A remaining after it has been heated for 30 minutes. (b) What is the time (in mins) required for 50% of the sample to be decomposed under the same conditions? (Ans : 0.96 ; 532.26 mins)

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter11: Rate Of Reaction

Section: Chapter Questions

Problem 38QAP: Consider the first-order decomposition of phosgene at a certain temperature. COCl2(g)productsIt is...

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Question

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Example 3
Compound A decomposes to compounds B and C on heating at 500 k according to the chemical
reaction:
2A → B+ 20
The rate constant of the reaction is 2.17 x 10$ s'.
(a) Calculate the fraction of A remaining after it has been heated for 30 minutes.
(b) What is the time (in mins) required for 50% of the sample to be decomposed under the same
conditions?
(Ans : 0.96 ; 532.26 mins]

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