
(a)
Interpretation:
Alcohol concentration has to be expressed in molality if the dinner wines contain
(a)

Answer to Problem 12.89QE
Molality of alcohol is
Explanation of Solution
Mass of alcohol that is present in the wine is given as
Mass of solvent that is present in the wine is calculated as shown below;
Molality of alcohol is calculated as shown below;
Therefore, the molality of alcohol is
(b)
Interpretation:
Alcohol concentration has to be expressed in mole fraction if the dinner wines contain
(b)

Answer to Problem 12.89QE
Mole fraction of alcohol is
Explanation of Solution
Mass of alcohol that is present in the wine is given as
Mass of solvent that is present in the wine is calculated as shown below;
Moles of solvent is calculated as shown below;
Mole fraction of alcohol is calculated as follows;
Therefore, the mole fraction of alcohol is
(c)
Interpretation:
Alcohol concentration has to be expressed in molarity if the dinner wines contain
(c)

Answer to Problem 12.89QE
Molarity of alcohol is
Explanation of Solution
Volume of solution is calculated as shown below;
Mass of alcohol that is present in the wine is given as
Molarity of alcohol is calculated as shown below;
Therefore, the molarity of alcohol is
(d)
Interpretation:
Alcohol concentration has to be expressed in grams of alcohol per
(d)

Answer to Problem 12.89QE
Mass of alcohol in
Explanation of Solution
Molarity of alcohol is calculated as shown below;
Mass of alcohol is calculated as shown below;
Therefore, the mass of alcohol is
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Chapter 12 Solutions
Chemistry Principles And Practice
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