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First of all, because technological limits mean that we can only get alcohol at a purity of about 90%. 90% alcohol is also far more expensive than 70%, so it is more cost effective to use 70%. Ignoring all of that, the main reason is that 70% alcohol works just fine and sterilizes object very well.70%alcohol is the efficient concentration to denature the protein.
70% ethanol has been shown to have the highest killing ability of microbes. Also, 100% ethanol is toxic to the user
If WE Use 90% alcohol it will get evaporated, for 30% alcohol no reaction occurs as water content will be high . so, 70% is used
70% alcohol signifies the amount the alcohol present in 100 ml of the solution. Considering the solvent to be water, 70% alcohol contains 70ml alcohol and 30ml water. Thus, the total comes out to 70 + 30 = 100ml. That's what the "%" signifies - (out of 100!)
The percentage is between 50 % and 70 %. But is denatured alcohol, I don't recommend to drink.
yes because, 70% alchole make easy contect with suface of the specimen
First of all, because technological limits mean that we can only get alcohol at a purity of about 90%. 90% alcohol is also far more expensive than 70%, so it is more cost effective to use 70%. Ignoring all of that, the main reason is that 70% alcohol works just fine and sterilizes object very well.70%alcohol is the efficient concentration to denature the protein.
how much 95% alcohol must be used to prepare 1000 ml of 70% alcohol
70% ethanol has been shown to have the highest killing ability of microbes. Also, 100% ethanol is toxic to the user
If WE Use 90% alcohol it will get evaporated, for 30% alcohol no reaction occurs as water content will be high . so, 70% is used
2/3 of 70% and 1/3 of 10%
Because the concentration of alcohol is lower; you pay the alcohol not the water.
70% ethnol is used for the dna isolation becuse it makes hydrogen bonding with the water molecules and makes DNA hydrophopic so that it pricipitated.
Yes, it is.
about 70%
35 percent 70 proof
20%