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Mercury
SEP Interpret Data The table shows
several decomposition reactions and the
estimated reaction energy based on bond
breaking and forming energies. What
pattern do you notice concerning the
energy for decomposition reactions?
IND
ercury
Decomposition Reaction
2H₂O (1)→ 2H₂(g) + O₂(g)
SO₂(g) → S (s) + O₂(g)
2HI(g) → H₂(g) + 1₂ (s)
Oxygen
Reaction Energy
(kJ/mol)
+498
+550
+7