(a)
Interpretation:
The new molarity needs to be determined if 55 mL of water is added to 25 mL of 0.119 M NaCl solution.
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,
V is the volume of the solution.
- The equation of dilution is given as,
Where,
(a)
Answer to Problem 31A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
- The equation of dilution is given as,
By substituting the given values in the formula and getting the molarity after the dilution,
The molarity is
(b)
Interpretation:
The new molarity needs to be determined if 125 mL of water is added to 45.3 mL of 0.701 M NaOH solution.
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,
V is the volume of the solution.
- The equation of dilution is given as,
Where,
(b)
Answer to Problem 31A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
The equation of dilution is given as,
By substituting the given values in the formula and getting the molarity after the dilution,
The molarity is
(c)
Interpretation:
The new molarity of the solution needs to be determined if 550 mL of water is added to 125 mL of 3.01 M KOH solution.
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,
V is the volume of the solution.
- The equation of dilution is given as,
Where,
(c)
Answer to Problem 31A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
The equation of dilution is given as,
By substituting the given values in the formula and getting the molarity after the dilution,
The molarity is
(d)
Interpretation:
The new molarity of the solution needs to be determined if 335 mL of water is added to 75.3 mL of 2.07 M CaCl2 solution.
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,
V is the volume of the solution.
- The equation of dilution is given as,
Where,
(d)
Answer to Problem 31A
Explanation of Solution
Given information:
The volume is,
The molarity is,
Calculation:
The equation of dilution is given as,
By substituting the given values in the formula and getting the molarity after the dilution,
The molarity is
Chapter 15 Solutions
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