Question: How much water is needed to prepare a 70% 1000ml isopropyl alcohol solution?

Answer:

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How do I Make 70 Percent Isopropyl Alcohol?

A graduated cylinder is used to measure volume.

Things You'll Need

Creating dilutions reduces the concentration of one liquid with the addition of another. In order to create 70 percent isopropyl alcohol, a solution of isopropyl alcohol with a concentration greater than 70 percent must be diluted by a calculated amount of water. The formula for this calculation is C1_V1=C2_V2, where C1 and V1 is the starting concentration and volume of the solution and C2 and V2 is the final concentration and volume of the dilution. For the purpose of this example, the initial solution is 100 percent isopropyl alcohol, creating a final volume of 500 mL of 70 percent isopropyl alcohol.

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