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= massa C₂H₅OH / Mr C₂H₅OH
= 1 gr / (24 + 5 + 16 + 1) gr/mol
= 1 gr / 46 gr/mol
maka jumlah kalor yang dibebaskan :
= 46 x 29,7 kJ
= 1366,2 kJ
persamaan :
2C + 3H₂ + ¹/₂ O₂ ------> C₂H₅OH ΔH = -1366,2 kJ