7. Energy, Rate and Equilibrium

In photosynthesis, green plants convert carbon dioxide and water into glucose (C6H12O6) according to the following equation:6 CO2(g) + 6 H2O(l) → C6H12O6(aq) + 6 O2(g)Estimate ∆H for the reaction using bond dissociation energies from Table 7.1. Give your answer in kcal/mol and kJ/mol. (C6H12O6 has five C―C bonds, seven C―H bonds, seven C―O bonds, and five O―H bonds).

Acetylene (H―C= C―H) is the fuel used in welding torches.Estimate ∆H for this reaction (in kJ/mol) using the bond energies listed in Table 7.1.

Nitrogen in air reacts at high temperatures to form NO2 according to the following reaction: N2 + 2 O2 → 2 NO2Estimate ∆H for this reaction (in kcal and kJ) using the bond energies from Table 7.1.