
(a)
Interpretation:
Molarity of
Concept Introduction:
Molarity is one of the parameters used to express concentration of a solution. It is expressed as,
(a)

Answer to Problem 1.AE
Molarity of
Explanation of Solution
Calculate the number of moles of solute methanol to determine.
Given that volume of methanol is
Rewriting the above equation to calculate mass of methanol,
Given that density of methanol is
Volume of solution is
Now calculate the molarity of methanol in
Conclusion:
Given the density of methanol solution, its molarity is calculated using relevant formula.
(b)
Interpretation:
Molality of
Concept Introduction:
Molality is one of the many parameters that is used to express concentration of a solution. It is expressed as,
(b)

Answer to Problem 1.AE
Molality of
Explanation of Solution
Volume of solution is
Rewriting the above equation to calculate mass of solution,
Given that density of solution is
Number of moles of methanol as calculated in previous step is
Molality of methanol is calculated as,
Conclusion:
Given the density of methanol solution, its molality is calculated using relevant formula.
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Chapter 1 Solutions
Quantitative Chemical Analysis
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