Which of the following solutions will have the lowest freezing point?

Which of the following solutions will have the lowest freezing point?

Correct Answer: MgCl2

Step 1: Understand that when a substance dissolves in water, it can break apart into smaller particles called ions.
Step 2: Identify the substances in the question and how many ions each one produces when dissolved.
Step 3: For example, MgCl2 breaks into 3 ions: 1 magnesium ion (Mg2+) and 2 chloride ions (Cl-).
Step 4: The more ions a substance produces, the more it can lower the freezing point of the solution.
Step 5: Compare the number of ions produced by each option to determine which has the most.
Step 6: Conclude that since MgCl2 produces the most ions, it will have the lowest freezing point.

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