Question

Your mother gives you a bottle of orange juice concentrate to mix with water and serve it to your visiting friends. She asks you to mix two tablespoons of the concentrate with water in a glass tumbler. If each tablespoon measures 15 mL and you make 150 mL of juice per person, what is the % v/v of orange juice concentrate in the mixture you prepared?

Answer 1

Given:

Volume of one tablespoon = 15 mL

Volume of orange juice concentrate (solute) = 2 × 15 = 30 mL

Total volume of juice (solution) = 150 mL

Volume by volume percentage

= `"Volume of solute"/"Volume of solution" xx 100`

= `30/150 xx 100`

= 20% v/v

Hence, the orange juice concentrate is 20 % v/v in the mixture prepared.