Answer to Question #346360 in General Chemistry for Joey

Question

What is the percent by volume of ethanol in a solution that contains 45mL of ethanol dissolved in 125mL of water?

Answer 1

Solution:

Percent by volume = (Volume of solute / Volume of solution) × 100%

Volume of solute = Volume of ethanol = 45 mL

Volume of solution = Volume of ethanol + Volume of water = 45 mL + 125 mL = 170 mL

Therefore,

Percent by volume of ethanol = (45 mL / 170 mL) × 100% = 26.47%

Percent by volume of ethanol = 26.47%

Answer: The percent by volume of ethanol in a solution is 26.47%