Answer:
Only dichloromethane will be present as bottom layer and other given solvents will be present as top layer in an aqueous extraction.
Explanation:
Whether the aqueous layer would be present on top or bottom, is decided by densities of the solvent.
Solvent which is less denser than water will be present as top layer in aqueous extraction and solvent which is more denser than water will be present as bottom layer.
Therefore,
a) Methanol is less dense than water, hence will be present as top layer in an aqueous layer.
b) Hexane is less dense than water, hence will be present as top layer in an aqueous layer.
c) Benzene is less dense than water, hence will be present as top layer in an aqueous extraction.
d) dichloromethane is more dense than water and hence will be present as bottom layer in aqueous extraction
e) diethyl ether is less dense and will be present as top layer in an aqueous layer.
So, only dichloromethane will be present as bottom layer and other given solvents will be present as top layer in an aqueous extraction.
The answer is- Part washers use cleaning solutions that eventually become spent and must be disposed of properly.
Cleaning solutions: Cleaning solution is a liquid solvent or solution used to clean the working surfaces and the parts of a machine.
What type of cleaning solution is Part washers?
- Parts washers are mechanical devices that are designed to be cleaned to remove debris, dirt, oil, paint, and other substances that could potentially contaminate parts to prepare them for assembly, packaging, or even painting.
- They are basically used to clean parts to make them ready for functional use.
- Cleaning solutions for washing used parts are considered a special waste because they can be hazardous waste and are waste from an industrial process.
- Used solvents are almost always hazardous waste. Both solvent and aqueous parts washers produce a sludge that is usually hazardous because it contains toxic metals and solvents from the parts being cleaned.
- Absorbents used to wipe parts after washing are also dangerous if they contain toxic metals in concentrations exceeding regulatory limits or listed hazardous solvents, and used oil may also contain hazardous waste.
- Thus, these cleaning solutions must be disposed of properly.
To learn more about the cleaning solutions, visit:
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Answer:
At the cathode in an electrolytic cell, ions in the surrounding solution are reduced into atoms, which precipitate or plate out on to the solid cathode. The anode is where oxidation takes place, and the cathode is where reduction takes place. The anode is defined as the electrode where oxidation occurs. The cathode is the electrode where reduction takes place. ... At the cathode, the metal ion in the solution will accept one or more electrons from the cathode, and the ion's oxidation state will reduce to 0. This forms a solid metal that deposits on the cathode.
what is the empirical formula for Barium chloride dihydrate
answer
BaCl2.2H2O