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b. C2H4(g) + O2(g) = CO2(g) + H2O(l) deltaHderajatc = -148 kJ/mol
c. 2C(s) + 2H2(g) = C2H4(g) deltaHderajatf = -84,86 kJ/mol
18 a. delta H = +198 kJ/2 = +99kJ/mol
b. deltaH untuk 1 mol SO2=delta H untuk 1 mol SO3 = +99 kJ/mol
c. mol SO3 = g/Mr = 20/80= 0,25 mol
maka deltaH SO3 = +99 kJ/mol x 0,25 mol = 24,75 kJ
d. mol SO3 (RTP) = V/Vm = 10L/ 24L/mol = 0,4 mol
maka delta H SO3 = +99 kJ/mol x 0,4 mol = +39,6 kJ