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70% has more water, thus more readily absorbed by cells. tricks the cells into admitting it
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∙ 14y 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..
What concentration of ethanol is the most effective bactericide?
70%
What concentration of Ethyl alcohol is effective bactericide?
1hour1hour
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 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.
Why use the 70 percent ethanol?
to save the 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.
Why is 70 percent ethanol used in rna extraction?
The density of 70% ethanol allows RNA settlement or say sedimentation in the vial.
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
Does ethanol kill mycoplasma?
Unfortunately not. Ethanol kills germs by denaturing their proteins, however it is not very effective against viruses and spores as it is very volatile. Furthermore the contact time should be at least 20 min at a concentration of 70-90%.
