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most "absolute" ethanol used in the lab is 95% ethanol by volume,this is due to the fact the ethanol is very miscible with water so its difficult to remove all the water that is present in the atmosphere,it is possible to get 100 alcohol but it is an awkward process and generally 95 does the job just fine
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∙ 15y ago
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How do you make 90 percent ethanol from 100 percent ethanol?
Add 10 parts water to 90 parts 100% ethanol.
How do you prepare 95 percent ethanol from absolute ethanol?
It is prepared by taking five volume of ethanol and dissolve in 100 ml of water .
What are the solvent and solute in a solution containing 100 grams of ethanol and 3 grams of sucrose?
Ethanol is the solvent and sucrose is the solute.
The vapor pressure of ethanol is 100 mmHg at 34.9oC and 400 mmHg at 63.5oC What is the molar heat of vaporization of ethanol?
39330 j.mol-1
What effect does adding water have on the boiling point of ethanol?
The pure ethanol has the boiling point 78.5 celsius while water has 100 celsius so when water is added to ethanol its boiling point becomes increased.
How do you make 90 percent ethanol from 100 percent ethanol?
Add 10 parts water to 90 parts 100% ethanol.
How do you dissolve LY2183240?
100% in ethanol
Why 70 percent ethanol is used for sterilization instead of 100 percent?
70% ethanol has been shown to have the highest killing ability of microbes. Also, 100% ethanol is toxic to the user
How do you prepare 95 percent ethanol from absolute ethanol?
It is prepared by taking five volume of ethanol and dissolve in 100 ml of water .
Approximately how many kcalories from ethanol are contained in one standard drink of vodka or rum?
There are about 100 kcalories from ethanol in a standard drink of vodka.
What are the solvent and solute in a solution containing 100 grams of ethanol and 3 grams of sucrose?
Ethanol is the solvent and sucrose is the solute.
HOW DO I CALCULATE THE PERCENTAGE BY MASS OF ETHANOL IN A MIXTURE OF ETHANOL AND WATER?
Divide the mass of the ethanol by the sum of the mass of the ethanol + that of the water and multiply by 100. Mass ethanol/(Mass ethanol + mass H2O) (x100)
How to prepare 20% (v/v) of ethanol?
To prepare a 20% (v/v) solution of ethanol, you need to mix 20 mL of pure ethanol with enough solvent to make a total volume of 100 mL. This means that for every 100 mL of solution, there are 20 mL of ethanol. You can use a volumetric flask to accurately measure the volume of the ethanol and the solvent. It is important to note that the volume of the final solution may not be exactly 100 mL due to the fact that liquid volumes are not necessarily additive.
The vapor pressure of ethanol is 100 mmHg at 34.9oC and 400 mmHg at 63.5oC What is the molar heat of vaporization of ethanol?
39330 j.mol-1
What effect does adding water have on the boiling point of ethanol?
The pure ethanol has the boiling point 78.5 celsius while water has 100 celsius so when water is added to ethanol its boiling point becomes increased.
How many grams of NaCl will dissolve in 100 ml of ethanol?
The answer is 0,065 g.
100-proof alcoholic beverage contains percent ethanol?
50% alcohol.
