Kendall R. What is the percent by volume of isopropyl alcohol in a solution that contains 25 mL of isopropyl alcohol in 2.2 L of water? 1 Expert Answer The question is a little vague. Is the isopropyl alcohol added to 2.2 liters of water, or is the FINAL volume of solution 2.2 liters? I'll assume the latter since we don't know if the volumes would be additive. Percent by volume means mls of solute per 100 mls of solution mls of solute = 25 ml isopropyl alcohol mls of solution = 2.2 L x 1000 ml/L = 2200 ml Percent by volume = 25 ml/2200 ml x 100 = 1.1 percent by volume
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