A liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute, resulting in a solution that is soluble in a certain volume of solvent at a specified temperature.

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29 views

Does adding mass to a liquid (not water) increase the volume

The Question sounds stupid but i have a legit problem I mixed 1000 mL coconut water and 225 g of agar-agar to make a coconut water [CW] agar. It gave me more than 1000 ml. the medium went beyond the ...
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0answers
10 views

What are the advantages of eutectic solvents over aqueous solutions for electroplating?

I'm trying to electrically strip lead contamination from aluminum. This answer suggests using a deep eutectic solvent (DES) as the conducting liquid for plating the lead onto a copper cathode. But ...
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22 views

How can I create a small pilot scaled vacuum distillation apparatus

I'm doing some research into building a small pilot scale distillation apparatus to separate ethanol dissolved essential oils from the ethanol solvent. I've run some experiments in a rotovape, but the ...
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0answers
24 views

Do neutral solvents besides water do something like irreversible hydrolysis?

Hydrolysis of some salts is irreversible. But while water is "special," there are plenty of other solvents of medium to low pH. I assume that if they can dissolve a salt, and they have free H ions, ...
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32 views

exchanging H2O in buffer for D2O - pH vs pD?

I have TBS pH 7.4 buffer that I am exchanging all the water out for D2O. How do I find out what the pD is after all the water is gone? I understand that pH meters don't work for deuterium, and it ...
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1answer
53 views

Why did my deep eutectic solvent solidify?

I'm finally getting around to beginning to test this deep eutectic electrolyte. I mixed choline chloride with urea in a 1:2 mole ratio in a glass container. It formed a sludge. I sealed the ...
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28 views

Non-destructive solvents for cyan-salts

What dissolves cyan-salts (NaCN and KCN) without destroying them the way water does via hydrolysis? I have to make my own cyan-salts, so they're somewhat precious to me. Every time I have to ...
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1answer
22 views

How to dissolve the build-up from a paraffin based oil?

I have a CNC lathes that use "oil" for cutting fluid during the machining of mostly metal materials. Typically a heavy paraffinic based cutting oil (petroleum distillate) is used during machining. ...
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63 views

Why aren't people pouring ethanol my unskinned chicken to remove excessive fat?

I see a lot of people putting cooked chicken thighs on paper towels to absorb the excessive fat. This gave me an idea: if you don't care about taste, why can't we rinse cooked chicken with ethanol and ...
3
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28 views

Which chemical should I use to wash soot precipitate from cast iron?

The soot deposition is quite strong (almost like graphite) and my iron object has a complicated shape with many grooves. Which chemical would dissolve the carbon without oxidizing the iron?
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68 views

The amount of the DMF in the Sonogashira coupling - why it is of importance?

I was looking for some protocols for Sonogashira coupling and have found that in many papers the amount of the DMF used is exactly 2 ml per mole of the substrate. Is there any reason for that? ...
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25 views

Understanding observations of dissolving surfactants in methanol, water and hexane combinations

I added various solvents to a shower gel product to see what would happen. The main surfactant ingredients in it are Methyl Gluceth 20, Sodium Laureth Sulfate, and Lauryl Glucoside. First I diluted ...
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1answer
28 views

Troubles with cinnemaldehyde extraction - A few general questions

I'm trying to do a cinnemaldehyde extraction. I've tried both a simple and a steam distillation. I'm using the video: [https://www.youtube.com/watch?v=bDoaPIKT_Xg] - as a guide. One of the main ...
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0answers
29 views

The effect of tetrahydrofuran solvent [closed]

We prepared the PhTeNa in situ from (PhTe)2 and sodium wire in THF. can we change the THF solvent by an other solvent having the same effect.
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1answer
44 views

Does storing a hygroscopic reagent in a bottle makes it prone to absorb humidity from the air trapped inside?

I've got a full bottle of 99,5% acetone, which I'd really like to keep it as dry as possible, though without using molecular sieves or other dessicants. Once I open the bottle for the first time, use ...
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0answers
56 views

How does the solvent determine if it's mono-bromination or tri-bromination?

In Phenol, the $-\ce{OH}$ group activates the benzene ring, making electrophilic substitution easier (bromine does not react with benzene alone). But why is it that the bromination (electrophilic ...
3
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77 views

Why anhydrous acetic acid is differentiating solvent?

Anhydrous acetic acid is differentiating solvent in which strong acids show different strength but water isn't. Why anhydrous acetic acid shows the strength of acids clearly, but water solvent cannot ...
3
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1answer
64 views

Does adsorption occur between liquids?

While reading a paper in a field other than chemistry, the author mentions a phenomena that he labelled "adsorption" and describes it as follows: ...I am told (though I do not know which liquids ...
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2answers
72 views

Are Organic Solvents used in Addition Reactions catalysts?

Say for example you are performing a halogenation reaction with dichloromethane (DCM) as the solvent: ethylene + chlorine $\stackrel{DCM}\longrightarrow$ 1,2-dichloroethane I have 2 questions: Is ...
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1answer
51 views

how to store solvent in laboratory? [closed]

I am organising chemicals and solvents in laboratory... being less specific ( as it would a big list of chemicals to provide here in my questions)... I wanted to know... how can we arrange solvents in ...
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0answers
31 views

Electrical conductivity of mixed organic solvents

I have done some experiments about electrical conductivity values of mixed organic solvents and I met some problem about it. In the first two week after the solvents are mixed, the EC value is stable ...
4
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1answer
207 views

Replacement for cyclohexane

I am attempting to isolate pure iodine from kelp using the method described here but I do not have any way of possibly obtaining cyclohexane. I was wondering if any easier to obtain solvents would ...
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36 views

Which are the appropriate washing solvents for gas chromatography equipment?

I work in a laboratory where gas chromatography is used extensively. We handle terpenes and terpenoids (alcohols, ketones, and acetates derived from terpenes), organic solvents (acetone, acetonitrile, ...
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1answer
38 views

Is a supersaturated solution still a solution?

Given that a solution must be a homogenous mixture, and having crystallized solids at the bottom of a solution is most definitely not homogenous, can a supersaturated solution still be technically ...
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37 views

Alternative to water as solvent for lithium metaborate?

I want to prepare a sample of lithium metaborate ($\ce{LiBO2}$) and need to dissolve it for this purpose. The only solvents I found so far are water and ethanol. In ethanol, one cannot dissolve ...
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1answer
147 views

What are the non-aqueous solvents for sodium polyacrylate?

I am attempting to use sodium polyacrylate as a sodium transport mechanism in a sulfur-bromine cell. I can upset the sodium balance with sodium salts, but the contamination introduced by the ...
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1answer
896 views

How to reverse damage done by nail polish remover without acetone to a laptop keyboard?

Today I was trying to clean my laptop with a nail polish remover (ingredients: ethyl acetate, peg-40, hydrogenated castor oil, panthenol, parfum, d-limonene, geraniol, ci 26100, ci 60725). Not only it ...
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70 views

Dissolving ability of octane vs nonane on neoprene

I have been working with straight chain octane and nonane. The neoprene seals in some parts of the apparatus are allegedly far more vulnerable to the deleterious effects of octane than nonane - why? ...
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153 views

difference between solving and dissolving something

what is the difference between the terms 'solve' and 'dissolve'? up until now I have used the two terms interchangeably, not having any sound scientific definitions for each. I have thought them both ...
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2k views

Why do soft drinks fizz?

I know it has something to do with carbon dioxide, but what exactly happens and causes the characteristic sound we hear (especially after we shake the bottle)? How do we manage to dissolve a non-polar ...
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1answer
87 views

How to perform solvent extraction of a solid

Suppose I have a solid compound from which I want to extract a target chemical I know is soluble in acetone. So I crush and mix the compound in acetone, dissolving the target and suspending the ...
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1answer
54 views

Solubility in homogenous mixtures of solvents [duplicate]

Alcohol and water are miscible. I am coming across some chemicals that are soluble in alcohol and insoluble in water. If I know solubility in two solvents separately, is solubility in a mixture of ...
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83 views

How to dissolve a strong resin in difficult situation?

The resin is made up from two components: Component A: silicic acid, sodium salt (less than 10% sodium silicate) Component B: Diphenylmethane-4,4'-Diisocyanate, isomers and homologs ...
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189 views

Solvation vs nucleophilic character

ATTEMPT: In $\ce{DMSO}$ there is no acidic hydrogen. So negative charge on oxygen will be concentrated as the anion will not be solvated by the polar aprotic solvent. Hence it should act as a strong ...
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1answer
197 views

Why do some solvents bubble more than others when boiling?

This question about boiling milk reminded me of my everyday lab work at the rotavap: Some solvents and solutes are feared for the intense bubbling they create while the solution is boiling — be it at ...
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0answers
21 views

Solubilizing ability of dichlorobenzenes

I am trying to understand why 1,2- and 1,3-dichlorobenzenes are such good solvents, able to solvate many organic compounds known to be hard to get dissolved. Any precise answer? It has something to ...
9
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2answers
191 views

How do I predict the solubility of a compound in a mixture of water and an organic co-solvent?

I'm trying to predict the solubility of long alcohols (e.g. 1-octanol, 1-decanol or 1-dodecanol) in a mixture of water and an organic co-solvent such as DMSO, acetonitrile or ethyl acetate. For ...
5
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1answer
1k views

Electrical conductivity of organic solvents

Do organic solvents such as pure ethanol and pure methanol conduct electricity? why is this so? I have done some research and have not been able to find anything conclusive. I would think it would ...
28
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3answers
2k views

Why is fresh ice sticky?

Fresh ice cubes are almost instantly sticky and easily cling on to fabric and other similarly rough surfaces. A few minutes later, however, the effect almost completely disappears. What is the ...
2
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1answer
468 views

Mixing solvents and other compounds - safety issues

I would like to know if it is safe to mix organic solvents together or organic solvents with some compounds listed below. In a mixture with random ratios (greater than zero - all chemicals present) ...
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90 views

What solvents can get rid of oil stains?

What kind of solvent would you use to remove an oil based stain? I need help for a chemistry lab report and I tried to look it up but nothing seems to be helping me
2
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1answer
174 views

Reactivate dried up ink of ballpoint pens

According to this question, ballpoint pens start writing intermittently when the ink is drying up. In other words, the ink is becoming more viscous and does not flow any more. Are there ways to make ...
3
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0answers
26 views

How do I calculate the viscosity of a mixture of toluene and isopropanol?

I am trying to understand why my nanoparticles will only electrophoretically deposit in a non-polar solvent and a non-polar/polar solvent mix but not in the polar solvent. I am hoping to use zeta ...
2
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0answers
31 views

Reference request for the number of solvents around a solute

I want to know if there is a way to find number of solvent molecules that are directly embracing a solute molecule ( something like a reference or table that shows waters of hydration ). Particularly ...
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1answer
53 views

Name for analog of salt hydrate with non-water solvents?

Salts can bind with some water to form hydrates. For example, we can call $\ce{CoCl_2\cdot 6H_2O}$ cobalt chloride hexahydrate. There is no reason that water should be the only solvent that can bind ...
3
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1answer
174 views

Why do exothermic dissolution reactions occur?

I've always been taught that an exothermic dissolution means that the forming of solute-solvent bonds releases more energy than the energy consumed to break solute-solute bonds and solvent-solvent ...
6
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1answer
499 views

Mixing solvents, or how does paint thinner work?

I would like to understand how a mixture of solvents works together. For example, there are two solvents combined, and each one alone can dissolve some material, but one acts faster. How do they ...
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3answers
694 views

Why do we use ethanol in SN2 reaction?

Solomons and Fryhle has an example in which they have showed a very simple substitution reaction. The question was to synthesize methyl iodide. What they have done is taken methyl chloride and ...
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1answer
43 views

Solvents in substitution reactions

My book says that to favour a reaction by SN1 mechanism we need to use a polar protic solvent and a polar aprotic solvent in a reaction by SN2. * My Prior Knowledge:* There are two types of polar ...
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1answer
243 views

Molecular weight determination from freezing point depression

I have these two questions in my lab manual and I don't know how to approach them. Which is the better solvent for molar mass determinations by freezing point depression, benzene or cyclohexane? ...