Concept explainers
Explain how you would prepare the following solutions using pure solute and water. Assume water has a density of
a.
b.
c.
d. Approximately
(a)
Interpretation:
The preparation of the given solutions using pure solute and water is to be explained.
Concept Introduction:
The number of moles is calculated by the formula,
Answer to Problem 7.43E
Explanation of Solution
The number of moles of
The above formula can be written as follows:
The given volume and molarity is
Substitute the volume and molarity in the equation (1).
Thus, the number of moles of
The amount of
The molar mass of
Substitute the value of molar mass in the given formula.
Thus, the amount of
Hence,
(b)
Interpretation:
The preparation of the given solutions using pure solute and water is to be explained.
Concept Introduction:
The concentration of the solution in
Answer to Problem 7.43E
Explanation of Solution
The concentration of the solution in
The given value of
Substitute the value of
Hence, the volume of solute is
Therefore,
(c)
Interpretation:
The preparation of the given solutions using pure solute and water is to be explained. The two ways to measure out the amount of glycerol is to be described.
Concept Introduction:
The concentration of the solution in
Answer to Problem 7.43E
Explanation of Solution
The concentration of the solution in
The given value of
Substitute the value of
Hence,
The density of glycerol is
The density is given by the formula,
Substitute the density and mass of glycerol and in the above formula.
Hence,
(d)
Interpretation:
The preparation of the given solutions using pure solute and water is to be explained.
Concept Introduction:
The concentration of the solution in
Answer to Problem 7.43E
Explanation of Solution
The concentration of the solution in
The given value of
Substitute the value of
Hence, the mass of solute is
Therefore,
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