Questions tagged [salt]

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

Filter by
Sorted by
Tagged with
0
votes
0answers
36 views

Corrosive potential of molten ionic salt

I was looking at this video about fourth generation of nuclear reactors and one of developing concepts is molten salt reactor (MSR) where melted ionic salt replaces water as coolant and also acts as a ...
-4
votes
1answer
79 views

Nomenclature of Colors of precipitates and solutions

I have just started learning salt analysis in inorganic chemistry. In it i came across the names of colors of various precipitates and solutions. Why do they have prefixes such as "scarlet" ...
4
votes
0answers
40 views

InChI issue with organic salts, inconsistent approach?

I am wondering why there is the following inconsistency in InChI: penicillin G vs. penicillin G potassium salt uses the /p layer to drop a proton but chloramine-T vs. tosylchloramide drops an H from ...
-1
votes
1answer
42 views

Rock salt as a green, non-electrical dehumidifier?

Has anyone tried using rock salt as a dehumidifier? Ive read a few DIY bits on it. I live in Georgia and its swampy and humid. I have a couple small dehumidifiers but I'm looking for some green and ...
5
votes
0answers
42 views

Why is surface tension of water decreasing as sodium chloride concentration increases? [duplicate]

For my IB chemistry IA, I am measuring the impact of salinity concentration on the surface tension of water (i am using distilled water). My hypothesis is: As the concentration of salt increases, ...
1
vote
1answer
65 views

Do superoxide salts of heavier alkali metals contradict the principle that lattice energy depends inversely on cation-anion distance?

I have a very basic understanding of quantitative lattice energy calculations: I only know that the lattice energy is directly proportional to the product of charges on the ions and inversely ...
0
votes
1answer
72 views

Qualitative analysis of the anionic part of a salt using it's soda extract [closed]

While testing for anions using dilute $\ce{H2SO4}$, we prefer using the soda extract for tests rather than the actual salt. But we don’t use it for tests of carbonates, bicarbonates and sulphites. Why ...
1
vote
1answer
50 views

Salt solubility and solvent dissociation

A textbook, describing a qualitative test for the $\ce{Al^3+}$ cation in which you use $\ce{NH4Cl}$ and $\ce{NH4OH}$ to precipitate $\ce{Al(OH)3}$, mentioned that the solubility of this precipitate ...
0
votes
1answer
68 views

On basic mercury salts

$\ce{HgCO3.3HgO}$ and $\ce{HgO.Hg(NH2)Cl}$ are called basic mercury carbonate and basic mercury amidochloride, respectively. I found this thread on the former; I've only seen the latter as the product ...
1
vote
0answers
43 views

Which salts give the sodium carbonate bead test?

Apart from the borax and the phosphate bead tests, there's also this one. It's done by heating the white bead of sodium carbonate and the salt with potassium nitrate; green and yellow colours ...
0
votes
0answers
32 views

Identification of salts observed in steam vaporiser

Recently I observed some precipitated salts in steam vaporizer after completion of vaporization. I am guessing that some of the white particles may be calcium carbonate ($\ce {CaCO3}$) formed from ...
6
votes
3answers
1k views

Why is sea salt coarse?

What makes sea salt coarser than other salt? I have tried checking online but no one seems to discuss this. It seems that the grain of sea salt is larger, but I don't understand since the salt is ...
-2
votes
1answer
68 views

Ought I add salt to water bottles, if I'm putting the bottles in front of a fan to improvise an air conditioner?

Is this advice correct? Are they alluding to Freezing Point Depression? Adding salt to tap water lowers the Crystalloid's freezing point. Pour 3 tbsp (51 g) of salt into each of your 3 plastic water ...
0
votes
0answers
98 views

Why is magnesium sulfate more soluble in water than that of strontium and calcium sulfates?

Magnesium sulfate is soluble in water. Its solubility is $\pu{26.9 g}/\pu{100 mL}$ at $\pu{0 ^\circ C}$ $(\pu{35.1 g}/\pu{100 mL}$ at $\pu{20 ^\circ C})$.[1] However, both calcium sulfate $(\pu{0.21 g}...
0
votes
1answer
146 views

Why Heating of certain salts like Lead salts produce crackling sound?

I recently discovered that heating of certain salts produces crackling sound and that is called Decrepitation. But I couldn’t figure out the reason why that happens moreover I couldn’t find anything ...
4
votes
1answer
60 views

Can potassium carbonate be used to calibrate hygrometers?

Context: In the process of trying to calibrate a number of hygrometers, with Sensirion MEMS electronic sensors, I came across the method of using wet salt: an airtight container will stabilize at a ...
2
votes
0answers
35 views

Out of KCl, CaCl2, MgCl2, NaCl, which causes the greatest corrosion rate of iron and why?

I know that salts act as an electrolyte in a redox process and rusting of iron, where iron loses electrons and oxidizes, and oxygen gains electrons and reduces. I did an experiment with KCl, NaCl, ...
6
votes
1answer
276 views

Why does the specific conductivity against concentration curve for NaCl curve more than KCl?

I understand why KCl has a higher specific conductivity than NaCl.. but I dont understand why the curvature is more significant for NaCl (KCl is a straight line). Ive provided a picture of this here, ...
1
vote
1answer
680 views

NaCl electrolysis with copper electrodes

Considering the aqueous $\ce{NaCl}$ is already concentrated. If we were to use copper electrodes instead of inert graphite electrodes: Would copper react with the evolved chlorine gas to give $\ce{...
-1
votes
1answer
30 views

Would adding a water soluble salt (e.g. NaCl) affect a water sensitive reaction?

Let's take for example a reaction that would benefit from having less water in it, ester formation from alcohol and acid. We know that the equilibrium can be shifted to the right (ester formation) if ...
-1
votes
1answer
35 views

Why do we need weak or strong acids to displace the anions of other weak acids from salts?

I have already looked at Why does a strong acid displace salt of weak acid? but I couldn't understand the answer and the analogy there. And I mean the above question in the following context : $\ce{...
0
votes
0answers
91 views

How do I go about calculating the enthalpy of a solution with an unknown salt?

I have the $\Delta T$, I have the specific heat of the calorimeter, I have known weights/mass. I know the salt is lithium-based. What steps do I take to calculate the enthalpy of the solution so I can ...
-2
votes
2answers
148 views

How is NaOH a base? [closed]

Firstly, how is $NaOH$ created? My teacher said that before it is $NaOH$, it is $NaO^-$. $$NaO^- + H_2O = NaOH + OH^-$$ If so, that means that $NaO^-$ is a base, which would make $NaOH$ it's conjugate ...
0
votes
0answers
14 views

How can I wet etch Nickel Chloride (NiCl/NiCl2) off a GaN sample

Apologies in advance for what may be a basic chemistry question - I'm asking from the point of view of microlithography. I have a Gallium Nitride sample which I have etched in a Ar/Cl plasma with a ...
0
votes
0answers
18 views

Salting out worsens extraction efficiency

I'm currently writing a thesis about using dispersive liquid-liquid microextraction DLLME for extracting nitramines from aqueous solutions. We've been using octan-1-ol as the extractant and HPLC for ...
0
votes
1answer
93 views

Effect of magnetism on dissolved Na+ and Cl- ions in water

Suppose we have put some salt in water. My state of knowledge is, that a hydration envelope is formed from the oxygen side of the water molecules on the Na+-Ions and one another from the hydrogen side ...
2
votes
1answer
87 views

How to read mutual solubility curves of salts with a common ion?

Came across a few graphs that represent the mutual solubility of two compounds in a solvent, for e.g., solubility of $\ce{KCl}$, and $\ce{NaCl}$ in $\ce{H2O}$. On these particular graphs, I can see $x$...
3
votes
0answers
20 views

Aluminum Battery with PAC setup : Rapid voltage drop problem after a charge

I am a retired man and seek for activity. I dont have background in chemistry but I want to learn an aluminum battery..the known problem is my aluminum metal get eaten and also corrosion even if using ...
2
votes
1answer
379 views

Order of solubility of sodium halides and potassium iodide

Order the following ionic compounds in decreasing order according to their ease to dissolve in water. a) NaBr; b) KI; c) NaF; d) NaCl. d > a > b > c a > b > c > d b > c > d &...
1
vote
1answer
218 views

Can someone explain why the electrical conductivity of magnesium chloride decreases with increasing concentration?

I was under the impression that the electrical conductivity should increase initially, then begin to plateau, then fall past the saturation point for strong electrolytes. However, from this, I see ...
0
votes
1answer
124 views

How to differentiate hydrous and anhydrous compound? [closed]

For an experiment, my teacher gave me containers of hydrates and their corresponding anhydrous compounds, but I have a feeling that for one of the compounds she switched the hydrate and anhydrous ...
1
vote
1answer
106 views

When blue vitriol is dissolved in water [closed]

when CuSO4.5H2O is dissolved in water, what physical and chemical effects happens to its water of crystallization? While solving a stoichiometric problem the ques was that 1litre of CuSO4.5H2O was ...
0
votes
1answer
59 views

Calculating the density of a magnesium sulphate solution

I am trying to calculate the density of a magnesium sulphate solution and came across this paper which determines an equation from experiment to do that. However, I am having trouble understanding the ...
0
votes
1answer
59 views

Extracting other mineral from salt in evaporated seawater

I recently stumbled upon this news: Seawater contains 47 minerals and metals. Starting with the most abundant and proceeding to the least abundant, these are chloride, with a concentration of $\pu{18 ...
0
votes
1answer
106 views

What makes the enthalpy of hydration of calcium chloride dihydrate unique? [closed]

I have recently done an experiment in an attempt to find the relationship between the water ratio in a hydrate and the enthalpy of hydration, and my results showed a correlation, but an anomaly for ...
-1
votes
1answer
22 views

Significance of enthalpy of hydration of salts [closed]

I've been researching for weeks but can't find anything on a real life process of hydration, as my experiment is determining the relationship between the enthalpy of hydration and different types of ...
0
votes
3answers
68 views

A problem regarding solubility and concentration

A solution is $\pu{0.10 M}$ $\ce{Ba(NO3)2}$ and $\pu{0.10 M}$ $\ce{Sr(NO3)2}$. If solid $\ce{Na2CrO4}$ is added to the solution, what is the $\ce{[Ba+]}$ when $\ce{SrCrO4}$ begins to precipitate? $\...
-1
votes
1answer
126 views

Will a salt dissociate completely in water to give free ions?

I was reading salt hydrolysis of a salt made from strong acid and weak base. I came across the hydrolysis of $\ce{NH_4Cl}$. These reactions were mentioned $$\ce{NH_4Cl + H_2O<=>NH_3 + HCl \tag{...
-1
votes
1answer
163 views

How does chromium behave in a carbonate solution? [closed]

I'm wondering how chromium (as a metal or as a salt) behaves in a concentrated carbonate solution. Will it form any, one or several carbonate specie(s)? Will the metal solubilize? How does it affect ...
0
votes
1answer
86 views

Monosodium Diphosphate (NaH3P2O7) Preparation

I looked on wikipedia for an answer but I couldn't even find a page for this salt, a subsequent google search didn't further enlighten me. Does any one know how monosodium diphosphate can be prepared?
13
votes
2answers
1k views

How to differentiate between iron and sodium flames?

According to my textbook, when a flame test of an iron salt is performed, it produces an orange, mostly yellow flame. Sodium salts also produce a yellow flame. As the colours of these two flames are ...
5
votes
2answers
1k views

What is happening when KCl burns in a bunsen flame? [closed]

I did the experiment to qualitatively observe the different colours given off by different salts when placed in a flame. But what is actually happening to the salt ? Take $\ce {KCl}$ for example. Does ...
0
votes
1answer
64 views

Why isn't auto ionisation of water considered when we find the pH during salt hydrolysis?

$\ce{H+}$ concentration from the auto-ionisation of water is $10^{-7}$ If we have $\ce{HA}$ as weak acid and $\ce{BOH}$ as weak base having $\mathrm pK_\mathrm{a} = 3.2$ and $\mathrm pK_\mathrm{b} =3....
1
vote
1answer
133 views

How are diazonium salts prepared without self coupling

While preparing diazonium salts, what prevents the freshly formed diazonium salt from reacting with the still unreacted amines left in the solution and perform diazo coupling? If this happened then ...
0
votes
1answer
53 views

Which salt is a surfactant and lowers the surface tension of the water? [closed]

I am doing my experiment on the surface tension of the water. How to show the decrease of surface tension of water with the increase in the concentration of salt? Is there any salt that lowers the ...
0
votes
2answers
114 views

How does the surface tension of water decrease with an increase in the concentration of NaCl?

Can anyone help me with the theory of surface tension? My chemistry experiment is related to the surface tension and concentration of NaCl. I am confused about my hypothesis. On the internet, I found ...
4
votes
1answer
199 views

Why is the test for sodium as dihydrogen antimonate so specific?

I have been attending lectures of salt analysis in my college. We are at group 6 cations or also known as group zero cations, namely $\ce{NH4^+}$, $\ce{K^+}$, $\ce{Na^+}$, $\ce{Mg^2+}$. The lecturer ...
2
votes
0answers
44 views

Why I get acidic solution at brine anode?

I have decomposed $\ce{NaCl}$ solution (brine) with electrolysis and yield $\ce{NaOH}$ at cathode, at anode I got acidic while expected was $\ce{NaClO}$ (alkaline) if it is $\ce{HOCl + HCl}$. Where ...
1
vote
0answers
61 views

What happens when you burn salt in paraffin

My 9 year-old son and I tried to do some extremely amateur flame testing... We lit a paraffin burner [a little tin of paraffin jelly that came with a marshmallow 'smores' kit!] and sprinkled on about ...
2
votes
0answers
40 views

How to calculate the pH of solutions of amphoteric salts? [duplicate]

I've been trying to understand how to calculate the pH of solutions of amphoteric salts, but I just can't figure it out. So, I've seen that it is commonly explained like this (example for a solution ...