question archive Estimate the enthalpy of the following reaction in kJ to 3 significant figures

Estimate the enthalpy of the following reaction in kJ to 3 significant figures

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Estimate the enthalpy of the following reaction in kJ to 3 significant figures.

H2(g) + Cl2(g) → 2 HCl(g)

Average bond energies for some bonds are:

H-H 436 kJ/mol

H-Cl 431 kJ/mol

Cl-Cl 243 kJ/mol

H-C 414 kJ/mol

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