An Ideal Gas Is Allowed to Undergo a Free Expansion

question 31

Multiple Choice

An ideal gas is allowed to undergo a free expansion. If its initial volume is V1 and its final volume is V2, the change in entropy is:

• A)nR ln (V2/V1)
• B)nRT ln (V2/V1)
• C)nk ln (V2/V1)
• D)0
• E)nR V2/V1

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Definitions:

Cross Elasticity

A measure of the responsiveness of the demand for one product in relation to a change in the price of another product.

Substitutes

Goods or services that can be used in place of each other.

Elastic

A term that describes the sensitivity of the demand for a good or service to a change in its price, with "elastic" demand being significantly responsive to price changes.

Least Elastic

Describes a situation where there is the smallest responsiveness of the quantity demanded or supplied to changes in price, typically associated with goods and services for which there are no close substitutes.