Solved: Equations Associated with Enthalpies of
Chapter , Problem 2PE(choose chapter or problem)
Problem 2PE
Equations Associated with Enthalpies of Formation
For which of these reactions at 25 °C does the enthalpy change represent a standard enthalpy of formation? For each that does not, what changes are needed to make it an equation whose ΔH is an enthalpy of formation?
(a) 2 Na(s) + ½ O2(g) → Na2O(s)
(b) 2 K(l) + Cl2(g) → 2 KCl(s)
(c) C6H12O6(s)→ 6 C(diamond) + 6 H2(g) + 3 O2(g)
Write the equation corresponding to the standard enthalpy of formation of liquid carbon tetrachloride (CCl4) and look up ΔHf° for this compound in Appendix C.
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