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Old 02-13-2006, 04:03 PM
chemkidrcs chemkidrcs is offline
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Thumbs up pH levels and solutes and solvents

does the ph level of a solvent affect how much solute you can put into it? and if so how can u test it?
i really need science fair ideas and this is my topic!
HELP!!!

-missy
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Old 02-16-2006, 10:56 PM
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Living_Chemistry Living_Chemistry is offline
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Quote:
Originally Posted by chemkidrcs
does the ph level of a solvent affect how much solute you can put into it? and if so how can u test it?
i really need science fair ideas and this is my topic!
HELP!!!

-missy
To answer your question: I'm not going to tell you the answer... experiment! Now, here's how you can test it.

1. Get two agents (bleach and vinegar for example), a beaker, some sugar, and some ph strips.
2. Fill the beaker with 100mLs of water
3. Count how many tablespoons of sugar you can pour into the beaker.
4. Record your data.
5. Dump your water.
6. Fill it up with 100mL of water.
7. Remove a tablespoon of the water, and add a tablespoon of bleach)
8. Test and see how many tablespoons of sugar you can add now.
9. Repeat steps 4-8 many times, varying the amounts of bleach, untill the entire beaker is bleach.
10.Repeat steps 4-9 with vinegar.
11.Clean and replace all materials.

Why does this work?
Vinegar is highly acidic, and bleach is basic. The more vinegar you add, the more acidic your solvent becomes. It's vice versa with bleach. (I hope you know how ph strips work!)
I'm not going to tell you your results, but the acid allows for a higher saturation point due to the nature of it. Bleach is the opposite.

Yours truly,
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Joker Jones
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