Question

The options are spontaneous, not spontaneous, or not enough information is given

Determine if the conditions presented would result in a reaction that is spontaneous, not spontaneous, or if there is not enough information to determine the spontaneity of the reaction. If not enough information is given to determine if the reaction is spontaneous, choose "Not Enough Information Given" for the answer. Assume constant pressure. An endothermic reaction in which the reactants are a gas and the products are a solid. The formation of glucose from water and carbon dioxide. An exergonic reaction. An exothermic reaction in which the entropy of the products does not change from that of the reactants. Remember, AG = AH - TAS

Answer 1

(1.) An endothermic reaction is which the reactants are a gas and the products are a solid : not spontaneous

(2.) The formation of glucose from water and carbon dioxide : not spontaneous

(3.) An exergonic reaction : spontaneous

(4.) An exothermic reaction in which the entropy of the products does not change from that of the reactants. : spontaneous

Explanation

For a reaction to be spontaneous, Gibbs free energy change,$\Delta$G should be negative.

$\Delta$G = $\Delta$ H - T$\Delta$S

For $\Delta$ G to be negative, $\Delta$ H should be negative (reaction should be exothermic) and $\Delta$ S should be positive (reactants are solids and/or liquids and products are gases). In these conditions, reaction is always spontaneous.