Answer to Question #225160 in Chemistry for Junior

Question

Determine the volume of ethanol, CH3CH2OH, that is in 70 mL of 42%(v/v) red

wine. 

Answer 1

Solution:

The volume of ethanol can be calculated as follows:

Percent by volume = [Volume of solute / Volume of solution] × 100%

Therefore,

42% = [Volume of ethanol / 70 mL] × 100%

0.42 = Volume of ethanol / 70 mL

Volume of ethanol = 0.42 × 70 mL = 29.4 mL

Volume of ethanol = 29.4 mL

Answer: The volume of ethanol is 29.4 mL