The Dissolution of Barium Hydroxide in Water Is an Exothermic

question 17

Multiple Choice

The dissolution of barium hydroxide in water is an exothermic process. Which statement is correct?

• A) The enthalpy of solid barium hydroxide plus pure water is less than that of the solution, at the same temperature.
• B) The enthalpy of solid barium hydroxide plus pure water is greater than that of the solution, at the same temperature.
• C) The enthalpy of solid barium hydroxide plus pure water is the same as that of the solution, at the same temperature.
• D) The temperature of the solution is lower than of the barium hydroxide and water before mixing.
• E) When barium hydroxide dissolves in water, the system does work on the surroundings.

---

Definitions:

Assignment

A transfer of rights, property, or responsibilities from one party to another.

Assignee

A person, company, or entity to whom rights or interests have been transferred by another, known as the assignor.

Liabilities

Obligations that a person or company owes to others, often in the form of debts or other financial commitments.

Check Conversion

The process of electronically transforming a paper check into an electronic payment, speeding up the transaction process.