Chemistry
Senior High
1.Diketahui: ∆Hf H2O = -242 kJ/mol
∆Hf CO2 = -394 kJ/mol
∆Hf C2H2 = +52 kJ/mol
Jika gas etena dibakar menurut reaksi:
2 C2H2(g) + 5 O2(g) ( 4 CO2(g) + 2 H2O(g)
maka ∆H = …. kJ/mol
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