Q7 a) A scientist measures the standard enthalpy change for the following reaction to be -572.4 kJ: H 2 CO(g) + O 2 (g) CO 2 (g) + H 2 O(l) Based on this value and the standard enthalpies of formation...

Q7

a)

b)A scientist measures the standard enthalpy change for the following reaction to be
-798.8
kJ :



CH₄(g)

+ 2 O₂(g)
CO₂(g)

+ 2 H₂O(g)



Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of
CH₄(g)
is kJ/mol.

c)A scientist measures the standard enthalpy change for the following reaction to be
-25.4
kJ :



I₂(g)

+ Cl₂(g)
2
ICl(g)



Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of
ICl(g)
is kJ/mol.