How much water should be mixed with 12 ml of alcohol so as to obtain 12% of alcohol solution
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% by volume = (volume of alcohol / volume of solution) x 100%
Arrange the formula to get volume of solution:
volume of solution = volume of alcohol / (% by volume /100%)
volume of solution = 12 mL / (12% /100%)
volume of solution = 100 mL
volume of water added = volume of solution - volume of alcohol
volume of water added = 100 mL - 12 mL
volume of water added = 88 mL
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