A Quantity of Heat Is Removed from a Hot Reservoir

question 21

Multiple Choice

A quantity of heat is removed from a hot reservoir at absolute temperature T and then is added to a cold reservoir at absolute temperature T/2.The cold reservoir experiences an entropy increase S.What is the change in the entropy of the universe?

• A)S
• B)zero
• C)-S
• D)2S
• E)S/2

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Definitions:

2-Pentanone

A five-carbon ketone with the formula CH3COCH2CH2CH3, used as a solvent in various industrial applications.

Thionyl Chloride

A reagent used in organic synthesis for transforming carboxylic acids into acyl chlorides or converting alcohols into alkyl chlorides.

2-Phenylethanol

An organic compound with a floral scent, commonly used in perfumery and flavoring, representing an alcohol with a phenyl group attached to the second carbon.

Toluene

Toluene is a colorless, water-insoluble liquid hydrocarbon of the aromatic series, used in the manufacture of various chemicals.