Questions tagged [solubility]

For questions related to the solubility of compounds in various solvents, especially in water. Do not confuse with [solutions] or [aqueous-solution].

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Separate Dextrose & Caffeine in water?

Can a dextrose / caffeine powder be (mostly) separated by dissolving in water then filtering the water? Dextrose is readily soluble in water (1-10 parts solvent to 1 part solute). Caffeine anhydrous ...
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2k views

What exactly happens at the critical solution temperature of a phenol water system?

What makes phenol that was turbid go clear beyond the critical solution temperature? We say beyond the critical solution temperature the constituents become soluble. What is the reaction or the exact ...
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161 views

Dissolve/alter cellulose properties for printed circuit boards

I'm trying to find any readily available chemical/substance (i.e. household, hardware store etc.) or combination of such that breaks down paper/cellulose. I'm a home electronics hobbyist and am ...
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447 views

acids, bases, salts, etc

All the chemical compounds can be categorized as acids, bases, and neutral compounds. There are different theories, namely Arrhenius Theory, Brønsted-Lowry Theory, Lewis Theory, which define the acids ...
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733 views

Concentration cell lower half cell concentration from measured cell potential

I am trying to find the Ksp of silver thiocyanate: AgSCN(s) --> Ag+ (aq)SCN-(aq) but I need to first prove that the lower [Ag+] = 1.27-12 M, but don't know how to find it. The data I am given: ...
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193 views

Is it possible to have same mass and volume for a solvent and its solution

Is there any solute-solvent interaction possible, in such a way that a solvent with mass X grams and volume Y litres, and a solute with mass A grams and volume B litres, to form a solution that has ...
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23 views

Physical or chemical absorption when SO2 is absorbed by water?

When SO2 is absorbed by water, in for example a scrubber, is this absorption physical (employing Van der Waals forces) or chemical (involving some kind of chemical bonds). Now, the water is cold, in ...
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32 views

Effect of water vaporation on saturated solution

At a high temperature, water is evaporated from the saturated solution by heating. What is the solution losing exactly by the fact that the water left the saturated solution? Does it affect its ...
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66 views

Can the solubility of a compound be used to estimate the degree of separation of a solute from a solution?

I'm confused exactly on how to use the concept of solubility to get the amount of separation from a certain solute in the solution. This arises from attempting to solve a problem regarding this ...
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1answer
48 views

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 ...
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41 views

Using a weak acid to prevent the precipitation of Mg(OH)2

I have this exercise in my chemistry book, and I have been staring at it for so long but unfortunately I have no single idea what to do and where to start. I will be so thankful for any help. $0.05$ ...
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40 views

How can I reduce sodium chloride levels in water, without removing other minerals?

How can I reduce sodium chloride levels in water, without removing other minerals? Good day, I make a sole from Himalayan Salt which I add to my Reverse Osmosis treated water to ensure my body isn't ...
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1answer
29 views

Can I have a homogeneous 2 molal solution of copper(II) sulfate at 20 °C?

I'm doing a high school chem project where I am making a calibration curve of copper(II) sulfate for spectrophotometry in which I make solutions with five different concentrations. The most ...
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461 views

Is it incorrect to say that oil is insoluble in water?

I'm a biology teacher and therefore not a chemistry specialist. When I was a student, my teachers used a mixture of water and olive oil to illustrate the concept of soluble and insoluble substances ...
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471 views

How does recrystallization work to purify if compounds have equal solubilities, but one is present in a greater quantity?

Every article or text I've read on crystallization states that it works by taking advantage primarily of differences in solubilities, but I've also been told that it can purify compounds with ...
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2k views

Why is KOH less soluble than NaOH in alcohols?

Alkali metal hydroxides solubility in water increases down the group. Because the mechanism of dissolution is the same in alcohols, why the anomaly?
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Why is calcium and ammonium perchlorate soluble but not potassium perchlorate?

Why is potassium perchlorate's solubility 0.76 g/100 mL (0 °C) but ammonium perchlorate and calcium perchlorate have 11.56 g/100 mL and 188 g/100mL (20 °C) respectively?
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Solubility product and precipitation

I was reading about removing temporary hardness using boiling (of magnesium bicarbonate) when I came across this sentence: It is because of high solubility product of Magnesium hydroxide as compared ...
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136 views

What is the causing my solution to precipitate?

I have a solution that contains M9 Minimal Media 5X, Glucose, Magnesium Sulfate, Calcium Chloride and L-Phenylalanine. When the solution is pH'd to 8.5 with 4M Sodium Hydroxide, it starts to ...
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136 views

What is the solubility of corundum in water at SATP?

In my textbook called General Chemistry, I could find the solubility of certain substances in water but corundum was not one of them. I've also read some web pages claiming that corundum is insoluble ...

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