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Rubbing alcohol is sold as a 70% (v/v) solution of isopropyl alcohol in water. What volume of isopropyl alcohol is used to make 500mL of rubbing alcohol?​

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Answer:

350 M L is the answer

Explanation:

Using this equation,

Volume/volume percent = x 100 %

Rearrange to solve for volume of solute:

Volume of solute =

=volume of solute Volume of solution Volume/volume % x volume of solution 100%

70% x 500 m L

100%

= 350 m L

350 m L of isopropyl alcohol is used to make 500 m L of 70% (v/v) rubbing alcohol.

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