Calculate the enthalpy of reaction for 2co + o2 → 2co2. given the following bond energies:
be(c≡o) = 1074 kj/mol
be(o≡o) = 499 kj/mol
be(c≡o) = 802 kj/mol

Answer : The enthalpy change for the reaction is 1043 kJ/mol.

Explanation :

The given chemical reaction is:

As we know that:

The enthalpy change of reaction = E(bonds broken) - E(bonds formed)

Given:

= 1074 kJ/mol

= 499 kJ/mol

= 802 kJ/mol

Now put all the given values in the above expression, we get:

Therefore, the enthalpy change for the reaction is 1043 kJ/mol.

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