Question

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)

Short answer

It had formed between two different atoms, carbon and chlorine, the bond between C-Cl is known as a heteronuclear bond. As a result, the bond energy is 339 kJ/mol (more significant than the average of the values given)

Step-by-step solution

Step-1: Heteronuclear bond's between C-Cl

A heteronuclear bond's bond energy is usually more significant than the mean of the two independent bonds formed by the same atoms.

That is, the sum of C-C and Cl-Cl atoms; these are referred to as homonuclear bonds.

Step-2: Calculation between the bonds

Hence,

C-C = 347 kj/mol

Cl-Cl = 243 kJ/mol

Average = (347 + 243) / 2 =295 kJ/mol

As a result, the bond energy must be more incredible than 295 kJ/mol.

As a result, the correct answer is D; 339 kJ/mol (greater than the average of the values given)