mayakinseth6077 mayakinseth6077

20-01-2020
Chemistry

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How many ml of 95% of ethyl alcohol should be added to sterile water for injection to make 1/2 liter of a 40% ethyl alcohol solution?

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gbustamantegarcia054 gbustamantegarcia054

21-01-2020

Answer:

V = 210.5 mL

Explanation:

V1C1 = V2C2

∴ C1 = 0.95

∴ C2 = 0.40

∴ V2 = 0.500 L

⇒ V1 = ((0.50)(0.40))/(0.95)

⇒ V1 = 0.2105 L

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