Answered: It takes 151./kJmol to break an…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Bonding

Section: Chapter Questions

Problem 2CR: hat does temperature measure? Are the molecules in a beaker of warm water moving at the same speed...

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It takes

151./kJmol

to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon.

Be sure your answer has the correct number of significant digits.

Expert Solution

Step 1

Given: Amount of energy required to break I-I bond = 151 KJ/mol = 151000 J/mol.

The amount of energy required to break a single I-I bond is given by,

$= > E n e r g y r e q u i r e d t o b r e a k \sin g l e b o n d = \frac{B o n d e n e r g y}{A v o g a d r o' s n u m b e r} = > E n e g y r e q u i r e d t o b r e a k \sin g l e I - I b o n d = \frac{151000}{6.022 \times 10^{23}} = 2.5075 \times 10^{- 19} J$

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