According to the diagram above, which of the followingstatements concerning solu

Question

According to the diagram above, which of the followingstatements concerning solution dilution is true?

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According to the diagram above, which of the followingstatements concerning solution dilution is true?

The number of solute particles decreases upon dilution. Correct answer: The number of moles of solute particles remains constant.
The number of moles of solute particles decreases upondilution.
The ratio of solute to solvent particles increases upondilution.
The number of moles of solvent particles decreases upondilution.

Explanation / Answer

The number of solute particles will not change when the solvent isadded. However, because you are adding to the original volume,looking at the entire solution, the 2nd picture will be lessconcentrated than the first. All that is essentially happening between the pictures isdecreasing the concentration of solute because of the solventadded. The number of particles is staying exactly the same, whichis why the correct answer is 'the number of moles of soluteparticles remains constant.' For example, lets say we have 2 moles of AgCl2 in aflask of .10 L of water , then we add another .20 L of water to theflask. We still have 2 moles of AgCl2 in the flask,however the concentration has decreased because we have added morewater. Hope this helps.

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