
Concept explainers
(a)
Interpretation:
The number of moles in 10.2 mL of 0.451 M AlCl3 solution needs to be determined.
Concept Introduction:
The molarity is the number of moles of the solute dissolved per liter volume of the solution. It is represented in mathematical term such that,
Where, n is the number of moles,
L is the volume of the solution.
(a)

Answer to Problem 29A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
The molarity formula is,
By substituting the given values in the formula and get the number of moles of ions,
The number of moles of solute is
(b)
Interpretation:
The number of moles of 5.51 L of 0.103 M Na3PO4solution needs to be determined.
Concept Introduction:
The molarity is the number of moles of the solute dissolved per liter volume of the solution. It is represented in mathematical term such that,
Where, n is the number of moles,
L is the volume of the solution.
(b)

Answer to Problem 29A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Formula used:
The molarity formula is,
Solution:
By substituting the given values in the formula and get the number of moles of ions,
The number of moles of solute is
(c)
Interpretation:
The number of moles of 1.75 mL of 1.25 M CuCl2 solution needs to be determined.
Concept Introduction:
The molarity is the number of moles of the solute dissolved per liter volume of the solution. It is represented in mathematical term such that,
Where, n is the number of moles,
L is the volume of the solution.
(c)

Answer to Problem 29A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
The molarity formula is,
By substituting the given values in the formula and get the number of moles of ions,
The number of moles of solute is
(d)
Interpretation:
The number of moles of 25.2 mL of 0.00157 M Ca(OH)2 solution needs to be determined.
Concept Introduction:
The molarity is the number of moles of the solute dissolved per liter volume of the solution. It is represented in mathematical term such that,
Where, n is the number of moles,
L is the volume of the solution.
(d)

Answer to Problem 29A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
The molarity formula is,
By substituting the given values in the formula and get the number of moles of ions,
The number of moles of solute is
Chapter 15 Solutions
World of Chemistry
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