Question

Enthalpy of atomization for reaction ch4(g) - c(g) + 4h(g) is 1665 KJmol. what is bond energy of c-h bond?

Answer 1

HEY USER...

METHANE HAS 4 C-H BONDS

SO BOND ENERGY IS 1665/4 = 416.25KJ/MOLE

THANK YOU

HOPE IT HELPS

Answer 2

The bond energy of the C-H bond is 416.2kJ mol

• The given reaction is as follows:

$CH_4\rightarrow C+4H$

• The enthalpy of atomization refers to the energy required to separate all the atoms attached in a compound and for the given reaction it is 1665 KJ mol.
• As in this case, carbon is attached with 4 hydrogen atom with a single bond, the bond energy of the C-H bond is calculated as follows:

$Bond energy = \frac{Enthalpy of atomization}{Number of bonds}$

Bond energy = $\frac{1665}{4}$

Bond energy = 416.2kJ mol

• The bond energy of C-H bond is calculated as 416.2kJ mol.

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