Unit 9- solutions

Question 1

Mass of solute / mass of solution x 100

Answer 1

% by mass

Question 2

Volume of solute / volume of solution X 100

Answer 2

% by volume

Question 3

Moles of solute / liters of solution

Answer 3

Molarity

Question 4

Dilution

Answer 4

M1V1 = M2V2

Question 5

Molality

Answer 5

Moles of solute / kg of solvent

Question 6

Molality is used when _________

Answer 6

Focus is on properties of solvent

Question 7

PPM

Answer 7

1 mg / 1 kg
Or
1mg/1L

Question 8

Properties of solutions that are affected by # of particles, but not by identity of dissolved solute particles

Answer 8

Colligative properties

Question 9

Colligative needs___________

Answer 9

Non-violitile solute: does not vaporize

Question 10

Pressure exerted by vapor on surface of liquid. Molecules of non-colitis solute take up space, preventing solvent molecule from vaporizing.
Condensation continues.
Condensations is faster than vaporization, ___ is produce

Answer 10

Vapor Pressure Reduction

Question 11

Ph

Answer 11

• log[H3O+]

- log [H+]

Question 12

Acid:
Base:

Answer 12

is less than 7

Is greater than seven

Question 13

POH

Answer 13

-log[OH-]

Question 14

H30+ ~ pH

Answer 14

10^-pH

same for pOH

Question 15

pH~ POH

Answer 15

pH + POH = 14

Question 16

Neutralization is a ___________

Answer 16

Double replacement reaction

Question 17

(MaVa = MbVb)(mol ratio)

Answer 17

Acid base neutralization

Question 18

What is the relationship between colligative properties and molality?

Answer 18

They are directly porportional

Question 19

Why is salt added on ground when snows?

Answer 19

adding salt lowers the freezing point of water, making the water remain liquid instead of ice.