4. Tap the faucet to add another 0.5 L of water, bringing the total volume of the solution. When you doubled the water volume, what happened to the concentration? How would you now classify this solution?

With the amount of dissolved solute unchanged, concentration is inversely related to the solution’s volume. Doubling the water volume therefore reduces the concentration to half its previous value, so the solution is more dilute. The correct choice is “It halved.”

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