Which of the following statements about spontaneity are true? A reaction with an

Question

Which of the following statements about spontaneity are true? A reaction with an increase in enthalpy and entropy will be spontaneous at all temperatures. A reaction with a negative value for delta G_nonstand will result in only products being present at the end of the reaction (equilibrium). Delta G allows us to determine if a reaction is spontaneous at any conditions (assuming constant T and P). A decrease in the entropy of the reaction ensures that only reactants will be formed during the course of a reaction. The enthalpy change in a reaction can be used to predict if a reaction will be spontaneous or not.

Explanation / Answer

G is major of spontaneity

G = H - T*S

If both H and S is positive, reaction may be non spontaneous at higher temperature. Hence option1 is wrong

Individualy can’t determine spontaneity.

Hence correct option is:

G allows us to determine if a reaction is spontaneous at any conditions

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