Chapter 14 Solution Concentration

Question 1

Concentration

Answer 1

The concentration of a solution is a measure of how much solute is dissolved in a specific amount of solvent or solution

Question 2

Percent by mass

Answer 2

The percent by mass is the ratio of the salutes mass to the solutions mass expressed as a percent

Question 3

Percent by mass formula

Answer 3

Percent by mass = mass of solute/ mass of solution x 100

Question 4

Percent by volume

Answer 4

• The ratio of the volume of a salute to the volume of the solution expressed as a percent
• usually describe solutions in which both salutes and solvents are liquids

Question 5

Percent by volume formula

Answer 5

Percent by volume= volume of solute/ volume of solution x 100

Question 6

Molarity

Answer 6

The number of moles of solute dissolves per liter of solution.

A.k.a. the molar concentration

Question 7

Molarity formula

Answer 7

Molarity (M) = moles of solute/ liters of solution

Question 8

Stock solutions

Answer 8

Concentrated Solutions of standard molarity’s

Question 9

Dilution equation

Answer 9

M1 V1 = M2 V2

M= Molarity
V= volume

M1 V1 = The molarity and volume of the stock solution

M2 V2= The molarity and volume of the dilute solution

Question 10

Molality

Answer 10

The ratio of the number of moles of solute dissolved in 1 kg of Solvent 

Question 11

Molality equation

Answer 11

Molality (m) = moles of solute/ kg of solvent

Question 12

Mole fraction

Answer 12

The ratio of the number of moles of solute or solvent and solution to the total number of moles of solute and solvent

Question 13

Mole fraction equation

Answer 13

Xa = Na/ Na + Nb

Xb= Nb/ Na+ Nb

Question 14

Solute

Answer 14

The substance being dissolved in the solvent