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Sagot :
Answer:
B.) –197.8 kJ
Balanced equation : 2SO₂(g) + O₂(g) → 2SO₃(g)
Given:
- SO₂(g) = –296.8 kJ/mol
- SO₃(g) = –395.7 kJ/mol
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- products : 2 ( –296.8 ) + O₂ = -593.6 kJ/mol + O₂
- reactant : 2 ( –395.7 ) = -791.4 kJ/mol
products energy = reactant energy
-593.6 + O₂ = -791.4
O₂ = -791.4 - ( -593.6)
O₂ = –197.8 kJ
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