The complete combustion of liquid benzene is represented by the equation: C6H6(l) + 7.5O2(g) - 6CO2(g) + 3H2O(l)

using the data below, calculate, for this reaction, a. dH b. dS c. dG at 25 degrees C

Substance: C6H6 O2 CO2 H2O
dH (kJ/mol): 49 0 -394 -286
S (J/mol.K): 173 205 214 70

Question

The complete combustion of liquid benzene is represented by the equation: C6H6(l) + 7.5O2(g) -> 6CO2(g) + 3H2O(l)

using the data below, calculate, for this reaction, a. dH b. dS c. dG at 25 degrees C

Substance:   C6H6          O2         CO2          H2O
dH (kJ/mol): 49                0           -394           -286
S (J/mol.K):    173            205          214           70

aaronq · Answer

The first 2 are similar calculations: 

dH = Hproducts - Hreactants

dS = Sproducts - Sreactants

then for the last:   dG=dH-TdS

anonymous · Answer

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