Calculate The Concentration Of Ethyl Alcohol Mixed With Water

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Q44: A solution contains 40 mL of ethyl alcohol mixed with 100mL of water. What is the concentration of the solution in terms of volume by volume percentage? 

Answer: 

Volume of solute (ethyl alcohol) = 40mL Volume of solvent (water) = 100 mL
Total volume of the solution 
= 40 + 100 = 140 mL 

Volume by Vol. Percentage 
= Volume of solute × 100 / volume of solution

⇒ v/v % = 40 × 100 /140 

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