MILLIONAIRE?

1
Welcome to...
2
WHO WANTS TO BE AMILLIONAIRE?
3
Opening Question

• Chemistry is the study of

4

• Matter and the changes it undergoes

5
For 100

• When a chemical system is at equilibrium,
• it can be described by all of the following
• EXCEPT

A) dynamic
B) forward rate reverse rate
D) static
C) constant concentrations
6
For 300

• CO Cl2 ?? COCl2 K 4.6 x 109 L/mol
• If the concentration of the product were to
• double, what happens to the equilibrium
• constant?

A) doubles
B) quadruples
D) halves
C) no change
7
For 500

• The formation of ammonia is exothermic.
• Which can be used to increase production
• of ammonia?

B) increase volume
A) increase temp
C) add ammonia
D) decrease temp
8
For 800

• For the formation of HI from its elements,
• Kp 45.9 at 763 K
• At equilibrium the partial pressures of HI and
• H2 are 4.00 atm and 0.200 atm respectively.
• What is the partial pressure of I2?

A) 0.200 atm

1. 1.74 atm

D) 0.574 atm
C) 0.436 atm
9
For 1000

• 2A (g) B (g) ?? C (g)
• 3.00 moles of A and 4.00 moles of B
• are placed in a 5.00 L container. At
• equilibrium A 0.40 M. What is
• the value of K?

A) 1.80
B) 2.00
D) 3.00
C) 0.89
10
For 2000

• Which is true for the dissociation
• of a weak acid?

B) the equilibrium lies to the right
A) Ka is large
C) the CB is neutral
D) the equilibrium lies to the left
11
For 4000

• What is the molarity of a HClO2 solution if
• the pH is 1.25? Ka 1.10 x 10-2

A) 1.23 M
B) 0.819 M
C) 0.287 M
D) 1.52 M
12
For 8000

• The pH of a 0.100 M weak monoprotic
• acid is 3.20. What is the value of Ka?

A) 6.3 x 10-4
B) 4.0 x 10-6
D) 3.2
C) 7.2 x 10-5
13
For 16,000

• A solution of acid, HA, is 0.47
• ionized. What is the value of Ka?

A) 3.4 x 10-8
B) 6.9 x 10-6

• 2.2 x 10-3

D) 3.8 x 10-2
14
For 32,000

• The conjugate acid and base of
• bicarbonate ion are, respectively

A) H2CO3 and CO3 2-
B) H3O and OH-
C) H3O and CO32-
D) CO32- and OH-
15
For 64,000

• Calculate the pH of a 0.30 M NH4Cl
• solution. (NH3 Kb 1.8 x 10-5)

A) 4.89
B) 3.33
C) 9.11
D) 5.22
16
For 125,000

• Which factor is most important in
• determining the strength of an oxyacid?

A) size of the molecule
B) identity of the central atom
C) number of oxygen atoms present
D) ability to change atomic orientation
17
For 250,000

• Given 100.0 mL of a buffer that is 0.50 M HOCl
• and 0.40 M NaOCl, what is the pH after 10.0 mL
• of 1.0 M NaOH has been added?
• (Ka HOCl 3.5 x 10-8)

1. 6.45

• 7.55

C) 6.64
D) 7.45
18
For 500,000

• Consider the titrations of equal volumes of
• 0.1 M HCl and 0.1 M CH3COOH with 0.1 M NaOH.
• Which of the following would be the same for both
  
• titrations?

A) the initial pH
B) the pH at the halfway point
C) the pH at equivalence point
D) the volume of NaOH needed to reach
equivalence point
19
For 1,000,000

• What is the pH at equivalence point for the
• titration of 100.0 mL 0.250 M aniline
• (Kb 3.8 x 10-10) with 0.500 M HCl?

A) 11.62
B) 8.70
D) 2.68
C) 5.23
20
CONGRATULATIONS!

• Youve Just Won 1,000,000
• DOLLARS !!!!

21
100
8,000
16,000
300
32,000
YES !
500
64,000
800
125,000
1,000
250,000
2,000
500,000
4,000
1,000,000
22
100
8,000
16,000
300
I'm sorry, that's the wrong answer.
32,000
500
64,000
800
125,000
1,000
250,000
2,000
500,000
4,000
1,000,000