Jawabanmu

2014-01-13T22:05:07+07:00
Diketahui:
i S +  O_{2} ==>  SO_{2} ΔH = A kkal
ii 2 SO_{2} +  O_{2} ==> 2 SO_{3} ΔH = B kkal
Ditanya: Δ H_{f} 2S + 3 O_{2} ==> 2 SO_{3} = ...?
Jawab:
i 2S + 2 O_{2} ==>  2SO_{2} (ini habis dibagi) ΔH = 2A
ii 2 SO_{2} (ini habis dibagi) +  O_{2} ==> 2 SO_{3} ΔH = B
__________________________________________________ +
2S + 3 O_{2} ==> 2 SO_{3} ΔH = 2A + B

Oke Dik ^_^. Semoga membantu. Don't forget to choice as the best answer.

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