Questions tagged [salt]
Use this tag for questions relating to salts and their properties.
57
questions
3
votes
0answers
28 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, ...
-1
votes
0answers
17 views
Is there a term for a gel-like substance with a higher concentration of salinity than EO water?
I am writing a story about a planet that is covered in water but the water is closer to a gel-like substance with a higher concentration of salinity than EO water. I just wanted to know if that was a ...
-3
votes
0answers
60 views
Why does an alkaline salt and acid not make hydrogen gas [closed]
Why does an alkaline salt and acid in solution form CO2 and water?
Rather than hydrogen gas and an unchanged negative ion?
Doesn’t happen, but is easy to work out without knowing anything empirically:
...
6
votes
1answer
62 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, ...
0
votes
1answer
58 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
29 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
24 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{...
-3
votes
0answers
29 views
How is molar mass of salt related to the concentration of a salt solution
I need to make a $\pu{10mL}$ $\pu{700ppm}$ salt solution. I know that $\ce{NaCl}$ will ionize into $\ce{Na+}$ and $\ce{Cl-}$ ions in water.
Should I use the molar mass of $\ce{NaCl}$ ($\pu{58.44 g/mol}...
0
votes
0answers
34 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
95 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
9 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 ...
-1
votes
0answers
30 views
Are all ions bases/acids or their conjugate forms?
If one has a cation, is that always an acid or a conjugate acid? If one has an anion, is that always a base or conjugate base? If not, can you mention any of these ions?
Also, if not every ion needs ...
0
votes
0answers
16 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
57 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 ...
3
votes
0answers
18 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
144 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
118 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
72 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 ...
0
votes
1answer
45 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
52 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
39 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
79 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
20 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
66 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
56 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
65 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
57 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?
12
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
732 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
55 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....
0
votes
1answer
80 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
32 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
58 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
186 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
37 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
51 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
35 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 ...
3
votes
1answer
61 views
Alkoxide metathesis
I am attempting a synthesis for acetylacetone. The preparation I wish to carry out is described on orgsynth by condensation of acetone and ethyl acetate with a base catalyst.
The problem for me is ...
5
votes
0answers
49 views
What acids, solvents is lithium-6 fluoride soluble in (other than HF)?
$\ce{LiF}$ is quite insoluble in water, and I'm trying to use some water-soluble acid or solvent to dissolve $\ce{^6LiF}$ (95% enriched) in. I'm not a chemistry person, I'm a radiation detection ...
0
votes
1answer
226 views
Are there any tasteless edible salts? [closed]
I saw on Youtube a video where caffeine was extracted from Red Bull using dichloromethane. However, due to dichloromethane tendency to form emulsions with liquid, an inefficient method was used to mix ...
-3
votes
1answer
299 views
Reaction Of Carbonic Acid With NaCl [duplicate]
I was just wondering if it was possible for anyone to specify what reaction conditions are required for the reaction between $\ce{H2CO3}$ (Carbonic Acid) and $\ce{NaCl}$ (Sodium chloride)?
Does this ...
1
vote
1answer
60 views
How to write the formula of a mixed metal salt?
I suppose the formula of the Sulphate salt of Sodium & Potassium is $\ce{KNaSO4}$ as the Pubchem site says so.
So, is there any rule that in the formulae such mixed metal salts we need to write ...
0
votes
1answer
80 views
How do I calculate the humidity inside sealed containers containing mixing salts?
At $\pu{25 ^\circ C}$:
saturated Magnesium chloride $\ce{MgCl2}$ keeps humidity 33% inside sealed containers.
saturated Sodium chloride $\ce{NaCl}$ keeps humidity 75% inside sealed containers.
I ...
0
votes
1answer
25 views
How does pressure influence the dehydration of salts?
It's well known that the boiling point of a substance increases with pressure. I was wondering if something similar happens with hydrated salts and the temperature at which they dehydrate.
I mean, if ...
0
votes
1answer
39 views
Why does Sodium Hydrogen Sulfate (Sodium Bisulfate) produce moisture?
In my chemistry lab, I have a vial of Sodium Hydrogen Sulfate (Sodium Bisulfate). I've noticed that when I take a spoonful using a spatula, the spatula gets covered in many tiny droplets, and the lid ...
4
votes
1answer
273 views
Can ionic compounds dissolved in organic solvent conduct electricity?
Ionic compounds dissolved in water, as an aqueous solution, can conduct electricity.
Can they conduct electricity if they are dissolved in organic solvent?
1
vote
2answers
175 views
Can separated and purified substances be obtained from a chromatogram?
I am studying chemistry, and I am learning about chromatography.
But I am confused about how chromatography is used to ‘separate and purify’ substances.
I have learnt about chromatography paper, ...
0
votes
2answers
2k views
Salt Bridges/Porous Disks
I am slightly confused about the concept of a salt bridge/porous disk. I understand that these are necessary in a galvanic cell since there is a charge buildup and the salt bridge and porous disks ...
0
votes
2answers
708 views
Remove only salt from salt water
I have a bottle of salt water I collected on a local beach. I want to see what is in it, apart from water and salt. If I boil the whole bottle and wait for it to evaporate, mostly salt will remain. I ...
2
votes
1answer
174 views
Why is brine solution more effective than granular salt in melting ice on a surface?
Why is a brine solution consisting of a small fraction of salt in water, more effective in melting ice on a surface, than just pure salt?
