September 2018 1 75 Report
Dik : ΔHf H2O = -242 kJ mol ⁻¹
ΔHf CO2 = -394 kJ mol ⁻¹
ΔHf C2H2 = +52kJ mol⁻¹
jika 52 gram C2H2 (Ar C= 12 dan H = 1)
dibakar sempurna menurut persamaan 2C2H2+5O2----> 4CO2+2H2O, maka entalpi pembakaran yg dihasilkan yaitu.. kJ beserta jalan yaa

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