Topical Questions These questions are keyed to the major topics in this chapter. Usuall...

Topical Questions

These questions are keyed to the major topics in this chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.

In photosynthesis, the sun’s energy brings about the combination of CO₂ and H₂O to form O₂ and a carbon-containing compound such as a sugar. In its simplest form, the reaction could be written

Using the enthalpies of formation in Table 6.2, (a) calculate the enthalpy of reaction and (b) decide whether the reaction is exothermic or endothermic.

Table 6.2