Practice problem

Predicting Spontaneity from Gibbs Free Energy Change

Consider the reaction of nitrogen gas and hydrogen gas to form ammonia: N2_2(g) + 3H2_2(g) -> 2 NH3_3(g). Predict the sign of the enthalpy change, by considering the number of bonds broken and formed in the reaction. Predict the sign of the entropy change by considering the number of moles of gas in the products versus reactants. Which of the following best predicts the spontanaeity of the reaction?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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