Evaluate the following statements. If they are correct, indicate ‘correct’. If t

Question

Evaluate the following statements. If they are correct, indicate ‘correct’. If they are not correct, revise the statement to make it accurate.

a. Evaporation of water at 383 K and 1 atm is enthalpically driven.

b. The freezing of water at 273 K and 1 atm is entropically driven

c. An enthalpically driven reaction can produce Suniverse<0.

d. Evaporation of water at 373 K and 1 atm increases the entropy of the universe.

e. An adiabatic process must have Ssystem=0 since q=0.

f. No irreversible processes can have Ssystem=0.

Explanation / Answer

f. correct due to for irreversible processes Ssystem always increases. According to third law of thermodynamics.

e.An adiabatic process must have Ssystem=0 since q=0, correct due to Ssystem=dq/T

d. Evaporation of water at 373 K and 1 atm increases the entropy of the universe is correct due to third law of thermodynamics.

c.An enthalpically driven reaction can produce Suniverse<0 is correct due to  H greaterthan zero. Hence the reaction is exothermic

b.

Water freezes in the atmosphere and produces a snowflake (0.5 points)

The entropy of the water molecules decreases as they go from liquid to solid

a.Evaporation of water at 383 K and 1 atm is enthalpically driven is an endothrmic reaction. Hence it is a spantanious process. All spantanious process have H is positve

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