Which of the following processes has a negative ΔG?

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Question: Which of the following processes has a negative ΔG?

Options:

Correct Answer: Dissolving salt in water.

Solution:

Dissolving salt in water is a spontaneous process at standard conditions, resulting in a negative ΔG.

Which of the following processes has a negative ΔG?

Which of the following processes has a negative ΔG?

Step 1: Understand what ΔG means. ΔG is the change in free energy of a process.
Step 2: Know that a negative ΔG indicates a spontaneous process, meaning it can happen without needing extra energy.
Step 3: Consider the example of dissolving salt in water. This process occurs naturally when salt is added to water.
Step 4: Recognize that when salt dissolves, it releases energy and increases disorder (entropy), which contributes to a negative ΔG.
Step 5: Conclude that since dissolving salt in water is spontaneous, it has a negative ΔG.

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