4.4 Solution Concentration and Solution Stoiciometry

Question 1

A homogeneous mixture of two substances—such as salt and water—is a ______.

Answer 1

A homogeneous mixture of two substances—such as salt and water—is a solution.

Question 2

The majority component of the mixture is the solvent, and the minority component is the…

Answer 2

The majority component of the mixture is the solvent, and the minority component is the solute.

Question 3

An ______ ______ is one in which water acts as the solvent.

Answer 3

An aqueous solution is one in which water acts as the solvent.

Question 4

A common way to express solution concentration is ______(M), the ______ __ ______ (in moles) divided by the _____ __ ______ (in liters):

______(M) =
______ __ ______ (in mol)/______ __ ______ (in L)

Answer 4

A common way to express solution concentration is molarity (M), the amount of solute (in moles) divided by the volume of solution (in liters):

Molarity (M) =
amount of solute (in mol)/volume of solution (in L)

Question 5

Notice that molarity is a ratio of the amount of solute per liter of _____, not per liter of solvent.

Answer 5

Notice that molarity is a ratio of the amount of solute per liter of solution, not per liter of solvent.

Question 6

We can use the ______ of a solution as a conversion factor between moles of the solute and liters of the solution.

Answer 6

We can use the molarity of a solution as a conversion factor between moles of the solute and liters of the solution.

Question 7

T o save space in storerooms, laboratories often store solutions in concentrated forms called _____ _____.

Answer 7

T o save space in storerooms, laboratories often store solutions in concentrated forms called stock solutions .

Question 8

How do we know how much of the stock solution to use? The easiest way to solve dilution problems is to use the following dilution equation:
___ = ___

Answer 8

How do we know how much of the stock solution to use? The easiest way to solve dilution problems is to use the following dilution equation:

M1V1 = M2V2

Question 9

M1 and V1 are the _____and _____ of the_____ _____ _____ and M2 and V2 are the _____and _____ of the __________ _____.

Answer 9

M1 and V1 are the molarity and volume of the initial concentrated solution, and M2 and V2 are the molarity and volume of the final diluted solution.