Questions tagged [salt]

Use this tag for questions relating to salts and their properties.

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Solubility of Ammonium Nitrate [closed]

Ammonium nitrate is readily soluble in water at room temperature, although its lattice energy (Approximately 3655 kJ/mol) is much greater than its hydration energy (Approximately -382 kJ/mol for ...
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0 answers
25 views

Calcium nitrate tetrahydrate oxidising properties [closed]

My Question is if the tetrahydrate form of calcium nitrate also has oxidising properties or if this goes only for the anhydrate
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0 answers
60 views

Insoluble ammonium salts?

Most solubility rules I can find state that "most ammonium salts are highly soluble". I wonder if there are actually any insoluble salts containing the ammonium ion. An answer here states ...
0 votes
1 answer
34 views

How to separate the salts within homemade sea salt

Goals There are a few things that I'm looking to do: Separate salt from seawater via some evaporation technique. Separate the each of the major salts from the resulting sea water to get each into ...
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0 votes
3 answers
106 views

Reaction between Ammonium chloride, Concentrated sulphuric acid and copper turnings

During a salt test, dry test for acid radical , mixed ammonium chloride with concentrated sulphuric acid and heated the mixture and added copper turnings to the mixture, the mixture on heating turned ...
-2 votes
1 answer
44 views

Disposal of Aqueous Magnesium Salts

Where can I find out where (specifically) aqueous magnesium chloride and aqueous magnesium bromide can be disposed? I was trying to find out whether solutions could be diluted and washed down the ...
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0 votes
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How heating of copper sulphate pentahydrate (blue vitriol) can be explained?

The chemical formula of copper sulphate pentahydrate, $\ce{CuSO4\cdot 5H2O}$ does not give information about its true structure because it's only an empirical formula. It forms a polymeric structure. ...
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1 vote
1 answer
115 views

Why water volume went up by almost the same amount after adding salt?

Seems like it's a well-known fact that adding salt to water will not raise the water volume by much (e.g.: Why there is no change in water level when salt is added? ) I've done this experiment at home ...
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0 votes
2 answers
133 views

Differentiating Ca2+ and Sr2+ ion

$\ce{Ca^{+2}}$ and $\ce{Sr^{+2}}$ both give a bit similar red color in flame test. What is the easiest way (chemical test) to distinguish $\ce{Ca^{+2}}$ and $\ce{Sr^{+2}}$?
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1 vote
1 answer
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Why can't we use concentrated acids to test for carbonates?

According to BBC Bitesize: Carbonate ions, $\ce{CO_3^{2-}}$, are detected using a dilute acid. Bubbles are given off when an acid, usually dilute hydrochloric acid, is added to the test compound. Is ...
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-4 votes
1 answer
42 views

Putting salt and ice in a can causes frost to form, while doing this again without salt will only cause condensation, why?

If this is the wrong place to ask my question, then blame my friend, and also tell me where to post this since I'm new. Anyway, we did an experiment in class where we took 2 soda cans with no top. We ...
19 votes
3 answers
4k views

Are salts (e.g. NaCl) soluble in liquid metals?

I'm curious whether any salt would at all dissolve in a liquid metal, such as gallium, mercury, or some other metal in the liquid phase? A Google search of "solubility of NaCl in Mercury" ...
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-4 votes
3 answers
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Can NH4Cl react with HNO3 to give NH4NO3? [closed]

I assume that the reaction would be $\ce{HNO3(aq) + NH4Cl(aq) -> HCl(aq) + NH4NO3(aq)}$ But will this reaction really happen?
-3 votes
1 answer
80 views

Salt analysis (cation) [closed]

I'm reading about salt analysis and I've got some questions: Image source: pdf Why are some sulphides (group II) precipitated in presence of HCl while others (group IV) in presence of ammonia ...
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-2 votes
1 answer
79 views

How fast does potassium hydroxide turn into potassium carbonate, in the case of leaked AA or AAA batteries? [closed]

When batteries start to leak, the highly toxic potassium hydroxide comes out, but it reacts with the carbon dioxide in the air and turn into the less toxic potassium carbonate salt. I'm wondering how ...
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2 votes
2 answers
134 views

Find the added volume of HCl so that the ions separate

Suppose we have a 10mL solution that contains 0.02M $\ce{Ag^+}$ and 0.04M $\ce{Ba^{2+}}$. a) Find the necessary volume to be added of $\ce{HCl}$ to separate all the silver. (Assume to be separated if ...
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2 votes
1 answer
84 views

Find the minimum concentration so that it doesn't precipitate

Calculate the solubility of silver chloride. a) in pure water b) Calculate the minimum concentration of ammonia that prevents precipitation in a solution that contains $0.1$ mol of AgNO3 and $0.01$ ...
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0 votes
1 answer
51 views

What happens when you mix a salt with a strong base? [duplicate]

This doesn't come off from a question but it came to my mind. Take an example of $NH_4Cl$ as the salt and $NaOH$ as the strong base. What would happen to the pH for example? I'm guessing that the salt ...
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0 votes
1 answer
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How can I find references related to pH for water solutions of salts [closed]

I have searched the web pretty much all day because I want to work out what the pH will be of various salts when they are in water solution. I have searched for references related to pKa and pH, but I ...
-5 votes
1 answer
36 views

Why is 10 times phosphate-buffered saline more acidic (~6.9) than 1 time phosphate-buffered saline (~7.4)? [closed]

Recently, I've been told that similar pH shift (of about 0.5 units) was observed with 20 times NPS solution as well. In case of NPS the authors provide the following recipe for the 20 times solution: ...
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2 votes
0 answers
42 views

How do salts affect pH? [closed]

Since pH measures the effective proton concentration, it is the concentration of a very specific type of cation. I know if salt reacts with water, it will affect pH. But my question is, how does the ...
0 votes
1 answer
69 views

Getting magnesium chloride gunk off a wood shelf

I have a situation. Some magnesium bath salts got left on a wood shelf in my bathroom in a bag that was not closed. Being hydroscopic, it sucked up a ton of water, and then spilled onto the wood. ...
-1 votes
1 answer
108 views

How long does it take for zinc oxide powder and heinz vinegar to fully react into zinc acetate at a 1:2 ratio of zinc:heinz vinegar? [closed]

How long should I leave a solution of zinc oxide powder and heinz vinegar in order for it to react as completely as possible? The solution is 1(zinc oxide powder):2(heinz vinegar) in a glass flask. ...
3 votes
2 answers
316 views

Doubt on the process to determine the amount of precipitate of a salt, product of a reaction between two solutions

I am attempting to determine whether there is going to be the formation of a $\ce{AgCl}$ salt precipitate if the following two solutions were to be added together: $50mL$ of $\ce{NaCl}$, $0.04M$, $...
2 votes
0 answers
33 views

Can other metal salt compounds besides copper sulfate/zinc sulfate be used to create chlorophyllin? E.g. the magnesium center is replaced

There has been a lot of research done into sodium copper chlorophyllin. The synthesis is quite simple and can be done at home. It involves extracting the chlorophyll, saponifying the solution, adding ...
-1 votes
1 answer
28 views

Will the solid formed after dehydration of a disodium hydrogen phosphate + sodium hydroxide solution be hygroscopic at STP?

Given a solution consisting of disodium hydrogen phosphate + sodium hydroxide (approaching a pH of 12), will the solid formed after dehydration of the solution be hygroscopic at STP? Which salts are ...
4 votes
0 answers
40 views

How can I transform Thiamine sulfate to Thiamine hydrochloride?

I have got thiamine sulfate and want to have thiamine hydro chloride. Can I obtain it by dissolving thiamine sulfate in water and adding calcium chloride water solution as long as calcium sulfate will ...
-2 votes
1 answer
88 views

How to synthesize sodium metabisulfite?

I am looking for ways to produce sodium bisulfite from $\ce{SO2}$ and $\ce{NaOH}$, but sources talking about $\ce{Na2S2O5}$ is quite scarce. Do you have any recommendations of articles, books or any ...
0 votes
0 answers
48 views

What happens to undissolved salt during electrolysis of brine?

Say we have a container of brine with excess NaCl in the anode, and a seperate container with just water at the cathode. Both are connected by a salt bridge. If we perform electrolysis, Sodium ions ...
0 votes
0 answers
287 views

When is NaHCO3 formed in the reaction between H2CO3 and NaOH

I my textbook, in the section on basic salts, NaHCO3 is stated as an example. However, as to how its obtained, the text mentions that it's just obtained by the reaction between H2CO3 and NaOH, hence ...
-1 votes
1 answer
95 views

Chemical name of a solution of ions such as salt dissolved in water [closed]

Is there any chemical name for the solutions of ions in water? I want to find out the name given to an aqueous solution of ions such as $\ce{Na+}$ and $\ce{Cl-}$ ions in water. Would it be something ...
-4 votes
1 answer
31 views

Increasing the weight in metal with salt? [closed]

Is it possible to increase the weight in metal (such as bronze) by exposing it, or soaking it in salt?
2 votes
1 answer
110 views

How to synthesize anhydrous zinc(II) nitrate?

I'm interested in making anhydrous zinc nitrate. I know it decomposes fairly rapidly if you heat it. It is also soluble in ethanol. Would another desiccant or a molecular sieve do the trick? Or maybe ...
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1 vote
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40 views

How to theoretically determine if a hydrate of a salt precipitates out of solution

In a solid-liquid extraction simulation process, there are multiple salts that precipitate in the solution. But how do I determine if these salts are hydrates or not? To give an example: $$\ce{Ca3(PO4)...
4 votes
1 answer
387 views

Why is there a difference in crystal shapes of sodium chloride (NaCl) and potassium chloride (KCl)?

According to Sodium chloride and Potassium chloride: Sodium chloride (NaCl) crystallizes, among various other shapes, into octahedron and tetragonal pyramid shapes which are absent in potassium ...
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Liquid water barrier and water vapor permeable membrane sheets

I am running an experiment where I am trying to maintain the relative humidity of a thermally insulated chamber. I am successfully able to hold the humidity using different salt solutions (NACL-75% RH,...
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-2 votes
2 answers
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Isolating potassium chloride from sodium chloride and potassium hydroxide

Assume that you have an aqueous solution of sodium chloride and potassium hydroxide. Is it possible to isolate potassium chloride from this? $$\ce{Na+(aq) + Cl-(aq) + K+(aq) + OH-(aq) -> Na+(aq) + ...
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1 vote
0 answers
27 views

How can I get a breakdown of different salt contents in a fertilizer solution?

I am experimenting a lot with hydroponics i.e. growing plants in a liquid solution. From time to time, I would like to do a check on what is the current salt level for major salts (ions) in parts per ...
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7 votes
2 answers
1k views

Why does my sea salt have a best by date? [duplicate]

Seems like it should be good for thousands of years, if not millions.
0 votes
1 answer
82 views

What happens when we react a sulfate salt solution with barium chloride and the formed precipitate with conc. hydrochloric acid?

When I performed this experiment in my school, I could not observe any sort of remarkable change (I must have performed it incorrectly or something). I wanted to know what should have been the correct ...
-1 votes
1 answer
99 views

What is the product of the following reaction(different sources give different answers) [closed]

$$\ce{FeS +dil HNO3}$$ $$\ce{FeS +conc HNO3}$$ I got different answers to these reactions in different sources Source1 Jd lee: Source 2 Op Tandon: Can anyone please explain which is the correct one ...
1 vote
1 answer
196 views

Why is sodium bisulfate acidic? [closed]

So, as I know, the rule says that if you get a salt from strong acid and strong base it should be neutral. In this situation with sodium bisulfate and also trisodium phosphate we get an acid salt, ...
3 votes
3 answers
674 views

Copper turned silver-color with crystalized soldered joints. How did this happen?

Please remove if this question if not allowed on this sub-exchange. I can post elsewhere if suggested. I was working on a small project requiring cleaning and polishing copper pipe, but found ...
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2 votes
0 answers
31 views

Salt extraction from water without affecting mercury concentration

I am looking to theoretically bio-analyze a water sample regarding its mercury concentration from both sea and lake water using a biosensor with an enzyme biorecognition element. However, a big issue ...
0 votes
1 answer
245 views

How does one obtain a CuCl2 (solid or in solution with water) from a solution with HCl

I have a solution of CuCl2 and with HCl, and I want to seperate CuCl2 from the HCl. I cannot boil or distill the solution, since I don't have a fume hood or access to a safe enough space outdoors. So ...
1 vote
0 answers
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How does ethanol separates salts from proteins [closed]

Grad student here messing around with famed TRIzol isolation protocol and looking to optimize the protein yield at the end. There are more direct ways to get protein from a sample but I like getting ...
0 votes
2 answers
356 views

Burning wood with ammonium chloride

There is a method where you use a water solution of ammonium chloride to paint some pattern or write some text on a piece of wood and then blow on it with a heat gun. The result is that the pattern ...
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3 votes
1 answer
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Forming conjugate acid of borate anion via protonation

I am a biologist so please forgive me as I likely won't be as rigorous as a professional chemist. I am using the RDKit package to extract organic molecules from salts, where one ion is organic and the ...
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0 votes
1 answer
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Low temperature sodium salt eutectic [duplicate]

I have a need for a sodium salt that melts below 265 degrees celsius, which will be exposed to liquid sodium metal. The anion is not important, only that it has a sodium cation. I have done a lot of ...
-1 votes
1 answer
90 views

lowest melting point of alkali salts [closed]

I want to make the alkali metals sodium and potassium through electrolysis of molten salts. However, I only have the ability to heat stuff up to about 260 degrees Celsius. What would be the lowest ...