Concept explainers
Interpretation: The density, mole fraction, molarity and molality of the given solution needs to be determined.
Concept introduction: The density, of a substance is defined as mass per unit volume and is given as,
Mole fraction is given as,
Molarity is given as:
Here,
Molality is given as:
Answer to Problem 21E
Density of the given solution is =
Mole fraction of the solute = 0.180
Mole fraction of the solvent = 0.98
Molarity of the solution = 0.98 mol/L
Molality of the solution =1.20 mol/kg
Explanation of Solution
Given,
Mass of phosphoric acid=10.0 g
Volume of water = 100 mL
Total volume of solution = 104.0 mL
Density of water =
Mass corresponding to 100.0 mL of water =
Total volume of solution = 104.0 mL
Density of the given solution is =
Mole fraction of the solute = 0.180
Mole fraction of the solvent = 0.98
Molarity of the solution = 0.98 mol/L
Molality of the solution =1.20 mol/kg
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Chapter 17 Solutions
CHEM.PRINC.W/OWL2+REBATE+2 SUPPL.>IP<
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