CO+2H2→CH3OH
VCO=15L=0.015m3
P=112000Pa
T=850C=358,15K
PV=nRT
n=(PV)/(RT)
n=(1120000,015)/(8,314358,15)
n(CO)=0,564mol
VCO=18,5L=0,0185m3
P=744torr=99191,84Pa
T=750C=348,15K
PV=nRT
n=(PV)/(RT)
n=(99191,840,0185)/(8,314348,15)
n(H2)=0,634mol
It can be seen that H2 is the limiting reactant
n(CH3OH)=1/2n(H2)=1/20,634MOL=0,317mol
ΔHrxn=ΔHf(CH3OH)−ΔHf(CO)=−238,6−(−110,5)=−128,1kJ/mol
E=ΔHrxn×n=−40,6kJ
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