3-3: Understanding Concentration of Solutions (Quizlet)

What is concentration in the context of a solution?

The amount of solute present in a given volume of solvent.

How can the concentration of a solution be described qualitatively?

As dilute or concentrated.

What does a dilute solution indicate?

It has a relatively small amount of solute.

What effect does adding more solvent have on a dilute solution?

It makes the solution more dilute.

What characterizes a concentrated solution?

It has a high amount of solute.

What happens when more solute is added to a concentrated solution?

The solution becomes more concentrated.

How can the degree of concentration be visually indicated in colored solutions?

The color intensity, with concentrated solutions being dark and dilute solutions being pale.

What is a common misconception about color intensity in solutions?

Color intensity does not always equate to concentration, depending on the nature of the solute.

What is percent by mass in terms of solution concentration?

The mass of solute divided by the total mass of the solution, multiplied by 100%.

How is percent by mass calculated?

Percent by mass = (mass of solute / mass of solution) × 100%.

What does a 5% by mass solution of sodium chloride (NaCl) in water contain?

5 grams of NaCl for every 95 grams of water.

What is percent by volume in terms of solution concentration?

The volume of solute divided by the volume of the solution, multiplied by 100%.

How is percent by volume calculated?

Percent by volume = (volume of solute / volume of solution) × 100%.

How is the alcohol content in alcoholic beverages often expressed?

In percent by volume.

What does a wine that is 20% alcohol contain?

20 milliliters of alcohol per 100 milliliters of wine.

What is the relationship between proof and percent by volume of alcohol?

Proof is twice the percent by volume of alcohol.

What is the proof of liquor that is 100% alcohol by volume?

100 proof is equivalent to 50% alcohol by volume.

What historical method was used to determine if rum was diluted?

Testing it with gunpowder to see if it would ignite.

What does 'under proof' mean in the context of alcohol?

The rum was diluted with water.

What is the equivalent of 100 proof in terms of ABV in the UK?

57.15% ABV.

What is the equivalent of 100 proof in terms of ABV in the US?

50% ABV.

What are the two common quantitative expressions of solution concentration?

Percent by mass and percent by volume.

What does a concentrated solution typically look like?

It usually has an intense or dark color.