Measure out one cup of 91 per cent rubbing alcohol, and pour it into the plastic container. Add one-third of a cup of water and stir to mix the solution. The solution is now 70 per cent rubbing alcohol. Repeat this procedure as often as needed to obtain the desired amount of 70 per cent rubbing alcohol.
How much water do you add to 90 alcohol to make it 70?
Thus, 3 ounces of water added to 15 ounces of 90 % rubbing alcohol will create a solution of 70% rubbing alcohol.
Can you make 91 alcohol 70?
Measure out one cup of 91 per cent rubbing alcohol, and pour it into the plastic container. Add one-third of a cup of water and stir to mix the solution. The solution is now 70 per cent rubbing alcohol. Repeat this procedure as often as needed to obtain the desired amount of 70 per cent rubbing alcohol.
How much water do you mix with 91 alcohol?
Ingredients: 8 fl oz, of 91% Isopropyl Alcohol. 2 fl oz tap water . (1 Tablespoon = 0.5 fl oz)
Can you dilute isopropyl alcohol with tap water?
A mixture of water and alcohol (whether ethanol or isopropyl) gets more compact because the different molecules can pack together better, by up to a few percent. ... Tap water will be fine. The alcohol you’re diluting will disinfect it . If you want to be ultra-sure, then use distilled.
