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70% has more water, thus more readily absorbed by cells. tricks the cells into admitting it

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16y ago

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Why 70 ethanol is used as disinfectant?

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..


Why 70 percent ethanol is used for sterilization instead of 100 percent?

70 percent ethanol is more effective at killing microbes than 100 percent ethanol. This is because the addition of water helps to denature proteins and disrupt cell membranes in the microbes, leading to better penetration and more efficient sterilization. Additionally, 70 percent ethanol is less volatile and evaporates more slowly, allowing for longer contact time with the microbes.


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.


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.


Why you use 70 percent ethanol in laminar air flow chamber?

70% ethanol is commonly used in laminar air flow chambers because it effectively disinfects surfaces by killing a broad spectrum of pathogens, including bacteria and viruses. The 70% concentration is more effective at penetrating the cell wall of microorganisms compared to higher concentrations of ethanol. Additionally, the lower ethanol concentration helps reduce evaporation, ensuring longer contact time with the surfaces being disinfected.


Why is 70 percent alcohol more effective?

The question cannot be answered because it does not specify:more effective than what, andmore effective at doing what.


Why 70 percent alchohal is more effective than 100 percent?

100% alcohol is more effective because of the more alcohol concentration in the drink.


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 use the 70 percent ethanol?

to save the ethanol


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.


How do you make 70 ethanol from 190 proof?

To make 70% ethanol from 190 proof ethanol, you can mix 3 parts of the 190 proof ethanol with 7 parts of water. Measure the appropriate volumes of each and combine them in a container, then mix thoroughly to achieve a final concentration of 70% ethanol.


Why is 70 percent ethanol or any diluted alcohol for that matter better at penetrating cell membranes than undiluted alcohols?

70 percent ethanol means it has 30 percent of water.so due to natural osmosis water can enter thr cell membrane.the ethanol thus moves inside along with water and hence has a beter penetrating power than undiluted ethanol.