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Hydrogen reacts with chlorine as follows.
H2(g) + Cl2(g) → 2HCl(g) ∆ H = –184 kJmol-1
The H-H bond energy is 436 kJmol-1 and
the Cl – Cl bond energy is 242 kJmol-1 .
What is the H-Cl bond energy?



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