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Worksheets

Solutions and pH

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.

What are the units for Molarity?

a)

gramsLiter\frac{grams}{Liter}

b)

LiterMoles\frac{Liter}{Moles}

c)

MolesLiter\frac{Moles}{Liter}

d)

MolesKilo grams\frac{Moles}{Kilo\ grams}

2.

A(n) ______ solution contains the maximum concentration of solute dissolved in it.

a)

Saturated

b)

Unsaturated

c)

Supersaturated

d)

Omegasaturated

3.

KMnO4 is dissolved in water. What Ions would it split into?

a)

K+ MnO- MnO- MnO- MnO-

b)

K+ MnO4-

c)

K+ Mn+ O-2 O-2 O-2 O-2

d)

KMnO4 is a Covalent Compound, it will not spilt

4.

Hexane is a Nonpolar Solvent. Which of the following would dissolve in it?

a)

NaCl

b)

Mineral Oil

c)

Water

d)

My Hopes and Dreams

5.

Which of the following is an example of a Strong Acid?

a)

KOH

b)

CH3COOH

c)

H2SO4

d)

HO2C2O2H

6.

A solution has a pH of 10.34

Is it an Acid or a Base?

a)

Acid

b)

Base

7.

A solution has a pOH of 10.34

Is it an Acid or a Base?

a)

Acid

b)

Base

8.

A solution has a pOH of 4.5

What is the pH of this solution?

a)

9.5

b)

18.5

c)

14

d)

4.5

9.

What is the pH of a solution with an [H+] concentration of 1x10-7?

a)

2.53

b)

5.34

c)

7.0

d)

11.4

10.

Which of the following represents an Acid?

a)

pH = 12

b)

pOH = 3

c)

pOH = 12

d)

[H+] = 2.3 x 10-10

11.

10 moles of NaOH are dissolved in 15 Liters of solution. What is the Molarity?

a)

0.66 M

b)

6.6 M

c)

1.33 M

d)

3.31 M

12.

A 12 M solution of HCl is diluted to 500mL of 2M solution. What volume of 12M HCl was used for this dilution?


Hint: M1V1 = M2V2

a)

8.3 mL

b)

83 mL

c)

830 mL

d)

0.83 mL

13.

What would happen to the freezing point of water if you added a bunch of sugar to it?

a)

It would increase

b)

It would equal the boiling point

c)

It would decrease

d)

It would stay the same

14.

What side of water would be attracted to a sodium Ion?


Sodium Ion: Na+

a)

The oxygen side

b)

The Hydrogen side

c)

The polar side

d)

The nonpolar side

15.

Which solution has the greatest concentration?


HINT: Calculate the Molarity!

a)

0.33 M

b)

-1.59 M

c)

6 Moles in 2 Liters

d)

1.6 Moles in 10 Liters

16.

Which would you expect to dissolve easiest in water?

a)

Lead Nitrate - Pb(NO3)2

b)

Rust - Fe2O3

c)

Hydrochloric Acid - HCl

d)

Fructose - C6H12O6

17.

Which of these definitions fits with the term Miscible?


HINT: Miscible and Soluble are synonyms

a)

Non able to be dissolved

b)

Able to be dissolved

c)

The relative concentration

d)

The strength of an acid

18.

When Salt (NaCl) is dissolved in water, it breaks apart into its ions: Na+ and Cl-. Water will then surround these ions.

Which intermolecular force is in effect here?

a)

Ionic

b)

Ion-Dipole

c)

Dipole- dipole

d)

Hydrogen Bonds

19.

_____ is an expression of the concentration of Hydronium Ions in a solution.

a)

pH

b)

pOH

20.

A solution has a pH of 1.34

Is it an Acid or a Base?

a)

Acid

b)

Base

21.

A solution has a pOH of 2.4

Is it an Acid or a Base?

a)

Acid

b)

Base

22.

Which of the following represents an Acid?

a)

pH = 12

b)

pOH = 3

c)

pH = 2

d)

[H+] = 2.3 x 10-10

23.

_____ is an expression of the concentration of Hydroxide Ions in a solution.

a)

pH

b)

pOH

24.

100g of Potassium Bromide (KBr) are dissolved in 10 Liters of Solution. What is the molarity?
 Molarity=moles of soluteLiters of solutionMolarity=\frac{moles\ of\ solute}{Liters\ of\ solution}  

a)

10 M

b)

0.08 M

c)

0.119 M

d)

2.4 M

25.

BONUS: In class we briefly discussed the process of Saponification - using a Base to create soap from oils or fats.


Which Base is used in modern soapmaking?

a)

Lye

b)

Bleach

c)

Baking Soda

d)

Potash