Unit 11 test

Question 1

An acid with two ionizable protons

Answer 1

diprotic

Question 2

The number of hydrogen ions equals the number of moles of hydroxide ions

Answer 2

titration

Question 3

A proton donor

Answer 3

Bronsted Lowry Acid

Question 4

Process of adding a known amount of solution of known concentration to determine the concentration of another solution

Answer 4

titration

Question 5

Indicator changes color at the

Answer 5

end point

Question 6

A 0.12M of an acid that ionizes only slightly in a solution would be termed

Answer 6

dilute and weak

Question 7

The ratio of moles of a solute in a solution to the total number of moles both solute and solvent

Answer 7

mole fraction

Question 8

A solution whose concentration is accurately known

Answer 8

standard solution

Question 9

When an acid reacts with a metallic carbonate the products are

Answer 9

salt, carbon dioxide, and water

Question 10

What is a distinct property of an acid?

Answer 10

sour taste

Question 11

What is an acid according to Arrunius

Answer 11

a substance that is a hydrogen ion donor

Question 12

What is an example of a strong acid?

Answer 12

perchloric acid

Question 13

What has a weak acid and a strong base

Answer 13

acetic acid, sodium hydroxide

Question 14

With solutions of strong acids and strong bases the word strong refers to

Answer 14

the degree of ionization

Question 15

A solution containing maximum amount of solute

Answer 15

saturated solution

Question 16

What is transferred between a conjugate acid base pair

Answer 16

a proton

Question 17

Moles of solute in one liter of solution

Answer 17

molarity

Question 18

if 2.0M of a 6.0M HCl is to make 500.0ml of solution, what is the molarity of the dilute solution?

Answer 18

(2.0M x 6.0M)/ 500ml = 0.024M dilute solution

Question 19

What does not change when a solution is diluted by the addition of a solvent?

Answer 19

number of moles of solute

Question 20

What mass of sodium sulfate is needed to make 2.5L of a 2.0M solution?

Answer 20

(2.0mol/1L) x 2.5L/1 x 142.04g/ 1 mol
= 710.02
=710g

Question 21

What is the number of moles of solute in 250ml of a 0.4 M solution

Answer 21

0.4mol/1000ml x 250ml = 0.1mol

Question 22

What is the molarity of a solution containing 409.5 grams of sodium chloride in 569 ml of solution?

Answer 22

409.5gNaCl x 1mol/ 58.44gNaCl x 1/569ml x 1000ml/1L = 12MNaCl

Question 23

Which of the following substances is less soluble in hot water than cold water?

Answer 23

carbon dioxide

Question 24

Which compound can act both as a B Lowry acid and base?

Answer 24

water

Question 25

Which of the following is an Arrhenius base?

Answer 25

LiOH (any OH)

Question 26

Calculate the ion concentration of a solution with a pH of 5

Answer 26

10^-5

Question 27

What is the molarity of an HCl solution if 50.0 mL is neutralized in a titration by 40.0mL of 0.400M NaOH

Answer 27

16, 1 NaOH + 1 HCl → 1 NaCl + 1 H2O 0.32

Question 28

Measure of the amount of solute in a specified amount of solvent

Answer 28

concentration

Question 29

What is the pH of a 1 x10 -5 MKOH solution

Answer 29

-log (1x10 -5)

Question 30

What is the pH when the hydronium ion concentration is 1 x 10 -3M

Answer 30

3

Question 31

A solution is a homogeneous mixture of two or more substances

Answer 31

True

Question 32

Contains free ions

Answer 32

electrolyte

Question 33

Steel is an example of a solid solution

Answer 33

true

Question 34

The major component in a solution is called the solute

Answer 34

false

Question 35

A saturated solution holds the maximum amount of solute under the solution conditions

Answer 35

true

Question 36

A sugar solution is an example of a weak electrolyte solution

Answer 36

false

Question 37

The solubility of solids in water generally increases with increasing temperatures

Answer 37

true

Question 38

What is the final concentration of a solution prepared by diluting 35.0 mL of 12.0 MHCl to a final volume of 1.20 L

Answer 38

do the dilution equation M1V1=M2V2

Question 39

After you have completed the task of diluting a solution, which statement below must be true

Answer 39

more volume, but lower concentration

Question 40

How many grams of KCl are needed to make 500mL of 2.45MKCl

Answer 40

2.45M/1000mL x 500mL x molar mass of KCl

Question 41

What is the missing molarity of a solution prepared by dissolving 10.7 g NaI in 0.250L

Answer 41

(10.7/molar mass NaI ) / 0.250L

Question 42

which of the following substances is not a solution? -copper -vodka -air -brass

Answer 42

copper