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Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 51QRT: Consider a 13.0% solution of sulfuric acid, H2SO4,whose density is 1.090 g/mL. (a) Calculate the...
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a) A typical commercial grade phosphoric acid stock is 75% H3PO4 by mass and has a
density of 1.57 g/mL. Calculate the molarity of H;PO4 in this solution.
b) An ethanol-water solution is prepared by dissolving 10.00 mL of ethanol, C2H$OH,
(d=0.789 g/mL), to produce 100.0 mL of a solution with a density of 0.982 g/mL. What
is the concentration of ethanol in this solution expressed as (a) volume percent and (b)
mass percent?
Transcribed Image Text:a) A typical commercial grade phosphoric acid stock is 75% H3PO4 by mass and has a density of 1.57 g/mL. Calculate the molarity of H;PO4 in this solution. b) An ethanol-water solution is prepared by dissolving 10.00 mL of ethanol, C2H$OH, (d=0.789 g/mL), to produce 100.0 mL of a solution with a density of 0.982 g/mL. What is the concentration of ethanol in this solution expressed as (a) volume percent and (b) mass percent?
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