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Calculate the bond energy per mole for breaking all the bonds in methane, CH4. Express your answer to four significant figures and include the appropriate units.

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taskmasters

The energy that is essential to break one C-H bond is 414 kJ/mol. Since, there are four C-H bonds in CH4, the energy Δ HCH4 for breaking all the bonds is calculated as Δ HCH4 = 4 x bond energy of C-H bond. By multiplying the 4 with the 414 kJ/mol you can get the answer of 1656 kJ/mol CH4 molecules.

pstnonsonjoku

The bond energy of methane is 1656 KJ/mol.

The bond energy refers to the energy is the energy required to break all the bonds in one mole of a substance. The bond energy is obtained from the heat of atomization of the elements involved in the bond.

Methane, CH4 contains four C-H bonds. Each C-H bond has a bond energy of 414 kJ/mol. Since there are four C-H bonds in methane;

Bond energy = 4 × 414 kJ/mol = 1656 KJ/mol

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