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a) 70% ethanol has been found to b most effective in killing microbes.Higher or lower concentrations may not b as effective. b) if u use 90% or absolute ethanol, it will evaporate fast and may not be much effective. c) using higher concentrations will leave its traces on the applied surfaces d) higher concentrations of ethanol are harmful to skin and makes it dry pretty a) 70% ethanol is most effective.higher or lower ones r not as effective b) it evaporates at a slow rate than 90% or absolute ethanol. therefore it is more effective and saves ur ethanol too.. c) higher concentrations alwez leave traces applied surfaces thus addind an unwanted reagent d) 70% ethanol is comparatively less harmful to ur hands.. higher concentrations makes ur skin dry..
What else can I help you with?
What is tincture of iodine and what is it used for?
Tincture of iodine is a disinfectant solution containing iodine and alcohol, used to prevent infections in minor cuts and scrapes. It has antiseptic properties that help kill bacteria and fungi on the skin. It should be used externally only and not ingested.
What is the boiling point of 70 percent ethanol?
The ethanol part of the mixture will boil at 78.4C, the rest of the substances will boil at their respective boiling points. This property provides the basis for fractional distillation, a method that can be used to refine crude oil into different types of products by heating the mixture to progressively higher boiling temperatures, then collecting and condensing vapor.
Meaning and use of alcohol denat?
alcohol refers to ethanol, the denat is short for denatured, which means that there is another chemical mixed with the ethanol to render it unconsumable by humans. Almost all ethanol that's used in the lab is denatured
Is ethanol a metal?
No, ethanol is an organic basic liquid, wine and beer contain ethanol, and it is flammable
Is ethanol on the periodic table?
No, ethanol is not listed on the periodic table. Ethanol is a chemical compound with the formula C2H5OH and is a type of alcohol that is commonly used as a solvent, fuel, and beverage.
What is the purpose of ethanol in biology?
It's mainly used as a disinfectant and preservative.
What is disinfectant made of?
A disinfectant is used to kill microorganisms. Some ingredients of disinfectants are: water, surfactants, fragrances. calcium hypochlorite, ethanol and benzalkonium chloride.
Is 70 percent ethanol the same with 70 percent ethanol?
Absolutely, recent painstaking scientific research has showed that 70% ethanol is the same as 70% ethanol.
What are the uses of ethanol?
Alternate fuel source, if you get 70% Ethanol and 30% water w/w you have a very good broad spectrum anti- bacterial, ethanol is used in labs as a solvent to dissolve desired compounds from different materials
Why 70 percenet is used instead of 100 percent as disinfectant?
Disinfectants are usually mostly alcohol, Ethanol to be exact. Ethanol can only reach a purity degree of 95-96 percent in liquid form, with purer solutions existing only as a gas. 70 percent alcohol is sufficient to kill the bacteria, and a higher purity would not have any beneficial effect.
Is there a nail varnish remover that does not contain alcohol?
no,dear..the base of nail varnish remover is an ethanol..i.e. alcohol..ethanol is also used s disinfectant in biotechnology labs..
Where is ethanol used?
Ethanol is commonly used as a fuel additive in gasoline to increase octane and reduce emissions. It is also used in the production of alcoholic beverages, as a solvent in pharmaceuticals, and as a disinfectant in household products. Additionally, ethanol is used in the manufacturing of personal care products and as a feedstock in the production of chemicals.
Is 70 percent ethanol is an effective disinfectant for prions?
No, 70 percent ethanol is not effective in disinfecting prions. Prions are highly resistant to common disinfection methods, including alcohol-based solutions. Specialized procedures involving harsh chemicals or autoclaving at high temperatures are required to effectively deactivate prions.
Why 70 percent percent ethanol used in labs?
70% is the most effective concentration to denature poteins so killing bacteria. At 95% the ethanol just evaporates and leaves the protein untouched. Below 70% does not denature proteins. It also makes the ethanol less flammable.
Why use the 70 percent ethanol?
to save the ethanol
What are the uses of ethanol in microbiology lab?
Ethanol is commonly used in microbiology labs as a disinfectant to sterilize surfaces, equipment, and lab benches. It is also used for flame sterilization of inoculating loops and needles. Additionally, ethanol is used in DNA and RNA extraction protocols to precipitate nucleic acids.
What is the total volume of 70 percent ethanol from 1600ml ethanol?
If I understand you correctly, we are trying to find the volume of 70% of 1600 ml of ethanol. That said: here is how you do it:1. Change 70% into a decimal. You do this by moving the decimal point two places to the right. This would turn 70 into .702. Multiply .70 x 1600.3. The answer is: 1120mL.
