Two Solutions (The System), Each with a Volume of 25

question 21

Multiple Choice

Two solutions (the system) , each with a volume of 25.0 mL at 25.0°C, are mixed in a beaker. A reaction occurs between them, and the temperature rises to 35.0°C. After the products have equilibrated with the surroundings, the temperature is again 25.0°C and the total volume is 50.0 mL. No gases are involved in the reaction. Which relationship concerning the change from initial to final states (both at 25.0°C) is correct?

• A) ΔU = 0
• B) ΔH = 0
• C) ΔU > 0
• D) q = 0
• E) w = 0

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Definitions:

Indifference Curves

represent combinations of two goods that provide the same level of utility or satisfaction to a consumer, illustrating their preferences.

Budget Constraints

The limitations on the consumption bundles that a consumer can afford given their income and the prices of goods and services.

Utility

A measure of satisfaction or pleasure derived from consuming products or services.

Money Income

The total amount of monetary earnings received by an individual or household, including wages, salaries, investments, and other income sources.