The reaction that represents the standard enthalpy of formation for sucrose (C12H22O11) is:
◦ C12H22O11(s) + 12 O2→ 12 CO2(g) + 11 H2O(g)
◦ 12 C(diamond) + 11 H2(g) + 11/2 O2(g) → C12H22O11(s)
◦ 12 C(graphite) + 11 H2(g) + 11/2 O2(g) → C12H22O11(s)
◦ 24 C(diamond) + 22 H2(g) + 11 O2(g) → 2 C12H22O11(s)
◦ C12H22O11(s) → 12 C(graphite) + 11 H2(g) + 11/2 O2(g)