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Reviewproblems

Colligative properties pH Titrations and

reactionsElectro

chemisty

Acids and Bases

™

Why do elements in a group have similar chemical

characteristics

A 100

Because they all have the same number of valence

electrons

A 100

What is the difference between ionic and covalent bonds in terms of electrons?

A 200

Covalent Bonds – Electrons are shared

between atoms

Ionic Bonds – Electrons are transferred from one atom to

another.

A 200

What is an isotope?

A 300

An atom that has different amounts of neutrons.

A 300

Define endothermic and exothermic reactions.

A 400

Exothermic reactions are reactions where energy is a released, ∆H is negative and

reactions generally feel warm.

Endothermic reactions are reactions where energy is

absorbed, ∆H is positive and reactions generally feel cold.

A 400

How many protons and neutrons are in an element of Carbon-14?

A 500

6 Protons; 8 neutrons

A 500

What are the three colligative properties?

B 100

Vapor Pressure Decreasing

Boiling Point Elevation

Freezing Point Depression

B 100

Which will lower the freezing point the most and why?

NaCl or C6H12O6

B 200

NaCl, because it dissociates into two particles and will

hold solvent particles in the liquid more effectively that

molecular substances that do not dissociate.

B 200

Name two instances where colligative properties are used in

everyday life.

B 300

B 300

Road Salt

Anti-Freeze in cars

Other responses will be judged by Ms. Jensen

What is the freezing point and boiling point of a 0.5 m

aqueous MgSO4 solution?

B 400

Freezing point: -1.86 degrees

Boiling point: 100.5 degrees

B 400

What is the boiling point of a solution made from 20.0 g of

CO2 in 400 g of water?

B 500

Boiling point: 100.5 degrees

B 500

Find the pH if

[H+] = 1 x 10 -9 M

And tell if the solution is acidic or basic

C 100

C 100

9; basic

C 200

What is the pH if [OH-] = 1 x 10 -6 M

and tell if it is acidic or basic

8; basic

C 200

Find the pH of a 2.6 x 10-3 M HCl solution and tell if it is

acidic or basic

C 300

2.6 ; acidic

C 300

DAILY DOUBLE

C 400

DAILY DOUBLE

Place A Wager

Find the pH a 6.7 x 10-2 Ca(OH)2 solution and tell if it

is acidic or basic

C 400

13.1; basic

C 400

If a solution has a pH of 6.7, find the hydrogen ion concentration.

Is this acidic or basic?

C 500

2 x 10 -7; acidic

C 500

What is a titration?

D 100

When an acid and a base is added together until they are

equivalent to find an unknown concentration

D 100

What is the molarity of an HCl solution if 30 mL is

needed to neutralize 20 mL of a 0.45 M NaOH solution

D 200

0.3 M

D 200

What is the molarity of an H3PO4 solution if 20 mL is

completely titrated by 45 mL of a 0.14 M NaOH solution?

D 300

0.105 M

D 300

Write a balanced reaction when magnesium hydroxide

and nitric acid react

D 400

Mg(OH)2 +2HNO3 Mg(NO3)2 + 2H2O

D 400

Write a balanced reaction when sodium reacts with

hydrobromic acid

D 500

2Na +2 HBr 2NaBr + H2.

D 500

Is this reaction a spontaneous redox reaction?

Mg + Sn2+ Mg2+ + Sn

E 100

Yes, Sn is reduced and is above magnesium and on reduction potential chart

E 100

How will electrons flow in a Sr/Sr 2+//Zn/Zn 2+

electrochemical cell?

E 200

Zinc

E 200

What are the oxidation numbers in NO3

-

E 300

+5, -2

E 300

What is oxidation?

E 400

How many volts can a

Pb/Pb2+ //Zn/Zn2+ cell

produce and

what neutral metal is made?

E 500

0.63 V; Pb

E 500

F 100

What makes a substance an acid?

The ability to dissociate into H+ ions.

F 100

Name the following and tell if it is a strong or weak acid or

base

HClO2

F 200

Chlorous acid; weak acid

F 200

What is the [OH-] in a neutral solution?

F 300

1 x10-7

F 300

Name the following and tell if it is a weak or strong acid or

base

Fe(OH)3

F 400

Iron (III) hydroxide

Weak base

F 400

Which of the following would be the best conductor

of electricity and why?

HNO3, H2S, Mg(OH)2

F 500

HNO3; because it is a strong acid so it ionizes completely

putting a lot of ions in solution

F 500

The Final Jeopardy Category is:

Acids and bases

Click on screen to begin

Which solution will have the most hydrogen ion?

pH = 9

pH= 2

Click on screen to continue

pH = 2

Click on screen to continue

Thank You for Playing Jeopardy!