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Problem: The energy of the C—C bond is 347 kJ/mol, and that of the Cl—Cl bond is 243 kJ/mol. Which of the following values might you expect for the C—Cl bond energy? Explain.(a) 590 kJ/mol (sum of the values given)(b) 104 kJ/mol (difference of the values given)(c) 295 kJ/mol (average of the values given)(d) 339 kJ/mol (greater than the average of the values given)

FREE Expert Solution

We have to estimate the bond energy of the C-Cl bond based on the given bond energies for C-C and Cl-Cl bonds.


We first need some definitions:

Homonuclear bond: A bond that is formed between two identical atoms such as C-C bond or the Cl-Cl bond.

Heteronuclear bond:A bond that is formed between two different atoms such as the C-Cl bond or the O-H bond.


The bond energy of a heteronuclear bond is usually greater than the average of the homonuclear bonds made by the two atoms in the covalent bond.

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Problem Details

The energy of the CC bond is 347 kJ/mol, and that of the Cl—Cl bond is 243 kJ/mol. Which of the following values might you expect for the C—Cl bond energy? Explain.

(a) 590 kJ/mol (sum of the values given)
(b) 104 kJ/mol (difference of the values given)
(c) 295 kJ/mol (average of the values given)
(d) 339 kJ/mol (greater than the average of the values given)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Bond Energy concept. If you need more Bond Energy practice, you can also practice Bond Energy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Staff's class at UTSA.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.