Concept explainers
Which of the following solutions contains the greatest number of particles? Support your answer.
.0 mL of 0 10 M sodium chloride
.0 mL of 0.10 M calcium chloride
.0 mL of 0.10 M iron(III) chloride
.0 mL of 0.10 M potassium bromide
.0 mL of 0.10 M sucrose (table sugar)
Interpretation:
The solution containing the greatest number of particles is to be predicted.
Concept Introduction:
There are many ways to determine the concentration of the solution. One of the most used methods is molarity. Molarity may be defined as the number of moles of the solute in one liter of the whole solution. Thus, the molarity can be calculated as,
Answer to Problem 11ALQ
The correct option is (b).
Explanation of Solution
Reason for correct option:
(b) The molarity of the
Substitute the values of molarity and volume in the given formula.
The total number of moles in the given solution is
To calculate the number of particles in a solution the formula used is,
Avogadro number is equal to the number of particles present in one mole, that is,
Substitute the values of moles and Avogadro number in the given formula.
One mole of
Reasons for incorrect options:
(a) The molarity of the
Substitute the values of molarity and volume in the given formula.
The total number of moles in the given solution is
To calculate the number of particles in a solution the formula used is,
Avogadro number is equal to the number of particles present in one mole, that is,
Substitute the values of moles and Avogadro number in the given formula.
One mole of
(c) The molarity of the
Substitute the values of molarity and volume in the given formula.
The total number of moles in the given solution is
To calculate the number of particles in a solution the formula used is,
Avogadro number is equal to the number of particles present in one mole, that is,
Substitute the values of moles and Avogadro number in the given formula.
One mole of
(d) The molarity of the
Substitute the values of molarity and volume in the given formula.
The total number of moles in the given solution is
To calculate the number of particles in a solution the formula used is,
Avogadro number is equal to the number of particles present in one mole, that is,
Substitute the values of moles and Avogadro number in the given formula.
One mole of
(e) The molarity of the
Substitute the values of molarity and volume in the given formula.
The total number of moles in the given solution is
To calculate the number of particles in a solution the formula used is,
Avogadro number is equal to the number of particles present in one mole, that is,
Substitute the values of moles and Avogadro number in the given formula.
The total number of particles present in the solution is
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