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How much water should be added to 12 ml ...

How much water should be added to 12 ml alcohol so the concentration of solution 3 becomes 12% ?

Text Solution

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Volume of solute = 12 mL
Volume of solvent = x mL
Volume of solution = (12 + x) mL
Volume percentage of solution
= `("Volume of solute")/("Volume of solution")xx100`
`12=12/(x+12)xx100`
`(12(x+12))/12=100`
`x+12=100`
x = 88 mL
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