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? asked in Science & MathematicsChemistry · 11 months ago

Chemistry Help Please ?

Use standard heats of formation, H0

f, to calculate the change in enthalpy for each reaction. 

a. C2H4 (g) + 3 O2 (g)  2CO2 (g) + 2 H2O (l)

b. C6H6 (l) + 9/2 O2 (g)  6CO (g) + 3 H2O (l)

c. Br2 (g)  Br2 (l)

d. CaCO3 (s)  CaO (s) + CO2 (g)

e. 2NO (g) + O2 (g)  2NO2 (g)

f. 2C (s, graphite) + O2 (g)  2CO (g)

g. 2H2O2 (l)  2H2O (l) + O2 (g)

h. 4NH3 (g) + 5O2 (g)  4NO (g) + 6H2O (g)

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