16. A chemical reaction occurs spontaneously when __________ A) energy is releas

Question

16. A chemical reaction occurs spontaneously when __________
A) energy is released.
B) energy is absorbed.
C) the volume increases and work is done.
D) more states of the reactants, products, and surroundings can be populated as a result.
E) the entropy of the products is greater than the entropy of the reactants.

17. Under what conditions are the values of the equilibrium constants, Kc and Kp, for a given gas-phase reaction
the same?
A)
There is no change in the moles of gas in the reaction.
B) There is no change in the temperature during the reaction.
C) The stoichiometric coefficients of the reactants all are the same.
D) The volume is controlled so the pressure remains constant.
E) Either Kc or Kp = 1.

Explanation / Answer

16. E) the entropy of the products is greater than the entropy of the reactants. 17. A) There is no change in the moles of gas in the reaction.

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