All Questions
Tagged with solutions aqueous-solution
202
questions
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3
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10k
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Why is a buffer solution most effective when concentrations of salt and acid are the same?
Why does a buffer work most effectively when the concentration of salt and acid is 1:1?
- 2,423
3
votes
1
answer
3k
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Permanent suspension of cocoa powder into water
I have failed in permanently suspending cocoa powder into water. I have tried heat (212'f) and pressure (40 psi) into a sugar water solution (50/50). Also, powdered milk and evaporated milk have ...
- 27
2
votes
1
answer
168
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metal salt solutions g/l means hydrate or anhydrous
I want to redo an experiment. They've used
Nickel chloride: 40 g/L
Nickel chloride can be bought in two forms: anhydrous ($\ce{NiCl2}$) and hydrate ($\ce{NiCl2....
- 23
2
votes
2
answers
505
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Does removing solution affect a supersaturated solution
Given a mixture of: a saturated solution of a solute in a solvent together with excess of the solute compound as crystalline material.
If one were to change the bulk composition of the mixture by ...
- 123
1
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1
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Evaporation of a mixture of salts
I was wondering what happens when you boil dry a solution of several salts for example a solution of KCl and NaNO3. Since the ions dissociate I was wondering if the ions would combine randomly upon ...
- 359
0
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1
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490
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How much water has boiled off when precipitation begins? [closed]
Here's a challenge problem I created! None of my students could get it; can you?
$25$ grams of table salt (NaCl) is dissolved in $150$ grams of water. The temperature of the solution is raised to its ...
- 113
30
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3
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Why do salts such as NaCl dissolve?
If we look at solubility of salts in water, we are told that they disassociate, because the positive $\ce{Na}$ ion is attracted to the partially negative oxygen in water and the negative $\ce{Cl}$ is ...
- 3,479