Concentration of Solutions

Question 1

Solutions can be described in two ways, namely…

Answer 1

1) Qualitatively
2) Quantitatively

Question 2

Qualitatively, you can describe a solution as either _ or _.

Answer 2

dilute, concentrated

Question 3

A dilute solution is a relatively _ amount of _.

Answer 3

small, solute

Question 4

A concentrated solution is a relatively _ amount of _.

Answer 4

large, solute

Question 5

What are the 3 ways of expressing the quantity of solute present in a given solvent?

Answer 5

1) Parts per Million (ppm)
2) Mass/Volume Percent
3) Mole Fraction, Molarity, and Molality

Question 6

_ is a unit for expressing very dilute concentrations.

Answer 6

Ppm

Question 7

Ppm is commonly used to express concentrations of pollutants in _ or _.

Answer 7

air, water

Question 8

What is the equation for ppm?

Answer 8

Ppm of component = (vol of comp / total vol of solution) 10^6 ppm

Question 9

/ _ is one of the simplest ways to express concentration of solutions.

Answer 9

Mass volume percent

Question 10

What is the equation for mass/volume percent?

Answer 10

Mass % of component = (mass of comp in solution / total mass of solution) × 100

Question 11

What are the three most commonly used quantitative measures of solutions?

Answer 11

Mole fraction, molarity, and molality.

Question 12

_ _ (X) is the ratio of the number of moles of one component to the total number of moles on the solution.

Answer 12

Mole fraction

Question 13

What is the equation for mole fraction?

Answer 13

Mole fraction = mol of comp / total mol of solution

Question 14

The sum of a mole fraction must be equal to _.

Answer 14

1

Question 15

_ is the most common way of expressing the concentration of a solution.

Answer 15

Molarity

Question 16

Molarity is defined as the number of _ of _ per liter of _.

Answer 16

moles, solute, solution

Question 17

What is the equation for molarity?

Answer 17

Molarity = mol of solute / liter of solution

Question 18

It is the number of moles of solute dissolved per kilogram of solvent.

Answer 18

Molality (m).

Question 19

What is the equation for molality?

Answer 19

Molality = mol of solute / kilogram of solvent

Question 20

Molarity is defined in terms of the _ of a _, whereas molality is defined in terms of the _ of a _.

Answer 20

volume, solution, mass, solvent

Question 21

GUFSA

Answer 21

Given, unknown, formula, solution, and answer.