Two Solutions (The System), Each of 25

question 54

Multiple Choice

Two solutions (the system) , each of 25.0 mL volume and 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 one of the following relationships concerning the change from initial to final states (both at 25.0°C) is correct?

• A)Δ E = 0
• B)Δ H = 0
• C)Δ E > 0
• D)q = 0
• E)w = 0

---

Definitions:

Guessed

An attempt to provide an answer or solution without sufficient information or knowledge.

10 Runs

In statistical quality control, a sequence of similar outcomes in a process, which may indicate non-random variation and signal the need for process examination.

Hole-in-one

A golfing term that describes the act of a golfer hitting the ball from the tee into the hole with just one stroke.

Subsequent Putt

A putt that follows an initial putt in the game of golf, attempting to get the ball into the hole.