Calculate the standard enthalpy of formation for glucose, C₆H₁₂O₆(s), from the following information. A calorimetry experiment shows that the enthalpy of combustion of 1 mol glucose to form carbon dioxide and water at 298.15 K is -2807.8 kJ. Use the data in Table 5.2 for the standard enthalpies of formation of carbon dioxide and water.

Strategy

ΔH for the reaction was measured and  for the products are in Table 5.2. The enthalpy of formation of oxygen gas is zero, so we can calculate  for glucose.

Table 5.2

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ΔΗ