All Questions
Tagged with solutions aqueous-solution
202
questions
-1
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1
answer
108
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What formula allows adjusting balance of (Ethyl Alcohol / Water / Caffeine powder) to know concentration for the Caffeine solution?
I am experimenting with different levels of concentrated caffeine solution. The solution has a small percentage of ethyl alcohol, in the $\ce{H2O}$.
Problems encountered too much ethyl alcohol ...
- 45
-1
votes
1
answer
1k
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Is it possible to prepare a 0.1 N solution of HCl and methanol? [closed]
In my lab guide I read: "Use a $\pu{0.1 N}$ solution of methanol-chloridic acid $(9:1)$ for the anthocyanin extraction", so I tried to calculate the volume of $\ce{CH3OH}$ and $\ce{HCl}$ to prepare it,...
2
votes
1
answer
129
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What is the interaction between dissolved ions of opposite valence in a solution at rest?
NaCl is dissolved in water. Ions sodium and chloride are sufficiently free from each other so that they may occupy different regions of the solution after an active transport process through a ...
- 123
2
votes
2
answers
2k
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Why doesn't the solute settle out of a solution, such as brine or sugar water? [closed]
If I have a solution of salt or sugar dissolved in water, the solute will never settle out or "fall to the bottom", no matter low long I wait. Why is that?
Since salt and sugar (in their pure, solid ...
- 359
6
votes
1
answer
413
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How Would A Vast Mixture (Like an Ocean) of Ammonia-Water Behave in Terms of Evaporation and Freezing?
First, I'll go ahead and say I'm not very versed in chemistry. My question comes from my interest in planetary-sciences, specifically the speculation that there are likely exoplanets and moons with ...
- 247
1
vote
0
answers
150
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Which of acid aqueous solution 1) to 4) is non-volatile one?
I am working on my scholarship exam practice assuming high school chemistry knowledge and struggling at how I can rationalize this question.
Which of acid aqueous solution 1) to 4) is non-volatile ...
- 167
0
votes
1
answer
183
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Solubility: Is the common ion effect proportional to individual solubility values?
I'm trying to grasp how solubility works in real applications. Is it so that in a solution with only one salt, it's solubility will change upon the addition of another salt with a common ion in a ...
- 451
1
vote
2
answers
448
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Does adding solutes to water alter its triple point? [closed]
Does adding solutes to water alter its triple point? If yes, how do we find the new temperature and pressure of this point?
- 153
1
vote
0
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374
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Over time what happens to soluble liquids with different densities
I have a case with two liquids: Water and another chemical which is miscible in water.
The chemical has a density of 800 g/l so it's 20% less dense than water.
Initially the chemical was mixed with ...
- 119
0
votes
1
answer
1k
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Molarity of pure water [closed]
The molarity of pure water is 55.5 M at which temprature is obtained this value? Further, you will come across that 1000 mL = 1000 g (for water only, but at which temprature?)
- 99
2
votes
1
answer
958
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How to find the concentration of barium ions in a mixture of barium sulfate and barium thiosulfate?
I have a hard time with selective precipitation problem.
A mixture of $\ce{BaSO4}$ and $\ce{BaS2O3}$ is shaken with pure water until a saturated solution is formed. Both solids remain in excess. ...
- 23
1
vote
1
answer
1k
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Henry's law p = kx vs m = kp
What exactly is the difference between the following equations?
$$p = kx \qquad\text{and}\qquad m = kp$$
Is the $k$ in both same, because I have seen same $k$ in textbooks for both equations?
- 1,236
1
vote
1
answer
87
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Neutralisation Reaction Confusion
What will happen when $\pu{1 mol}$ of $\ce{H2SO4}$ reacts with $\pu{1 mol}$ of $\ce{NaOH}$?
Will $\pu{1 mol}$ each of $\ce{NaHSO4}$ and water be formed?
Or will $\pu{0.5 mol}$ of $\ce{H2SO4}$ will ...
- 776
2
votes
2
answers
63
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Heating 2% solution to get 4% solution
I have a 2% solution of Zinc sulfate in water (in heptahydrate form) that I want to turn into 4% solution instead of having to buy 4% solution separately.
Would heating it to 100 degrees Celsius and ...
- 131
0
votes
0
answers
35
views
How addition of a soluble salt affects equilibrium involving precipitation with a base sharing the same cation?
I have the following reaction at equilibrium:
$$\ce{Ba(NO3)2(aq) + KOH(aq) <=> Ba(OH)2(s) + 2 KNO3(aq)}$$
Will there be a change in the equilibrium if the salt $\ce{KCl}$ is added? Will the ...
