Questions tagged [salt]
Use this tag for questions relating to salts and their properties.
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Role of MnSO4 in permanganometric titration
This might sound like a stupid question, but I have been unable to wrap my head around it.
Recently in a lab I had to titrate H2C2O4 with KMnO4 in acidic medium (H2SO4). However, in the work, it ...
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Products formed on reaction of aqueous solution of iron(III) nitrate nonahydrate
Crystalline iron(III) nitrate nonahydrate, Fe(NO3)3.9H2O, has a very pale violet color. When added to water, the crystals dissolve to form a brown solution. Treatment of this brown solution with ...
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Small (personal) scale sea salt production?
I was looking to try to make a small setup for producing small amounts of sea salt. Ideally a series of evaporation chambers, with a heavy brine as the finished product, that could then be baked. May ...
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Why wont Al(OH)3 form in this reaction?
I am in grade 11. We were learning qualitative salt analysis and my teacher wrote a reaction on board - $$\ce{Al^3+ +H2O\rightarrow[Al(H2O)6]^3+}.$$
Now as far as structure of the complex is concerned ...
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Why do most sulphate salts have water of crystallization in them?
I mean looking at most of the sulphate salts (there are so many but just to name some Epsom salt, blue vitirol, gypsum...) they have some amount of water crystallized within them (Epsom salt is MgSO4....
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growing flawless NaCl crystals
Simple experiments on the internet show how to grow salt (NaCl) crystals, but the crystals are small and flawed. Several companies sell flawless optics, like windows, made of NaCl, which are ...
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Why is the statement regarding the strength of ionic bonds reasonable? [closed]
In largely ionic compounds (e.g. NaBr and NaI), it seems to be generally true that, the greater the differences of electronegativity between the forming substances (i.e. The compound has more "...
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Reaction of ammonium sulfate with an acid?
Consider the following
Which statements are properties of an acid? Statement 1: React with ammonium sulfate to form ammonia. Statement 2: Red litmus turns blue.
Obviously stataement 2 is false. ...
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Vapor pressure of a weak acid for a solution of its salt
I need to calculate the vapor pressure of an acid in equilibrium with an aqueous solution of its salt. For example, say I have a solution of 40% potassium formate by mass in water at 50°C. How do I ...
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What is the name of the bond between oxygen atoms and Na+ ions when NaCl dissolves in water?
When NaCl (sodium chloride, table salt) dissolves in water, the NaCl molecules break apart. The hydrogen atoms form hydrogen bonds (I think?) with the Cl- ions. What is the name of the bond between ...
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Calculating salinity from sodium and chloride in water [closed]
let me start by saying that I am definitely no chemist, so this question might (or might not) seem trivial to all you professionals out there.
I have recently found a brand of carbonated water here in ...
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In a flame test, what is being excited? [duplicate]
I have done a flame test with $\ce{NaCl}$ and got the yellow characteristic flame of sodium. I am trying to understand exactly how this yellow color is being produced and when I searched for it, I got ...
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Why does molar conductivity of a weak electrolyte exceed that of a strong electrolyte at low concentrations?
My textbook has this graph.
The only sort of explanation given is that conductivity increases on dilution because the salts ionise better. Which is incomplete because then the graph for KCl should be ...
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How to homogeneously mix a very small quantity of a salt in a very large quantity of another salt?
I'm trying to recreate super salt which is a mixture of:
90 parts NaCl
10 parts ...
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How can I compare the UV/Vis absorption difference after metal ion chelating of crown ether-containing polymer?
Recently I have synthesized the polymer that contains 1-aza-18-crown-6 in the repeating unit. I want to know if there is any UV/Vis absorption difference after the chelation of metal ion. Considered ...
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How can I find vapour properties of a compound molten salt?
I'm carrying out thermal-hydraulic simulations of the Aircraft Reactor Experiment (a nuclear molten salt reactor) based on circulating molten fuel salt: NaF 53 mol%, ZrF4 41 mol%, UF4 6 mol%.
While ...
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By what mechanism might the decarboxylation of sodium benzoate in the presence of heat and sodium lye occur?
I am trying to get into chemistry and I saw a video by Nile Red in which powdered sodium benzoate and sodium hydroxide are mixed and heated and a reaction proceeds as follows:
$\ce{NaOH (s) + ...
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Elegant and fast way without chromatography to remove fluoride ions from water phase without contamination of the polar water soluble product?
I have a challenging purification routine. I want to remove fluoride from an aqueous solution, my product is a phosphonic acid, which is readly water soluble and an anion.
The anion is about 200 Da in ...
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Can you infer toxicity of an ionic compound based on the toxicity of its ions in other configurations?
Suppose I have two ionic compounds: "NaY" and "XCl". If these were both 'safe' to eat, would it be true that ...
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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 ...
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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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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 ...
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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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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 network solid. Two ...
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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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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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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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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 ...
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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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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?
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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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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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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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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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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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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 ...
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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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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 ...
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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. ...
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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. ...
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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 $\ce{NaCl}$, $0.04M$,
$...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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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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)...