Transcript Jeopardy Template

Friday, May 23rd: “A” Day
Tuesday, May 27th: “B” Day
Agenda
2nd semester Chem 2 Jeopardy Review
NEXT TIME:
Chem 2 2nd semester final exam…
Chem 2
nd
2 Semester
Final Review
THE RULES:
 The host’s decisions are final
(no whining!)
Each member of the winning
team will receive $1 mole money
to use on the final
And now…here is the host of
Jeopardy…
Alex Trebek
(just wanted to see if you were paying
attention)
Let’s Get Ready to play…
Today’s Categories are:
Ch. 12
Gases
Ch. 13
Solutions
Ch. 14
Equilibrium
Ch. 15
Acids & Bases
Chemistry
Rhyme Time
Ch 12
Gases
Ch 13
Solutions
Ch 14
Equilibrium
Ch 15
Acids & Bases
Chemistry
Rhyme Time
$100 $100 $100 $100 $100
$200 $200 $200 $200 $200
$300 $300 $300 $300 $300
$400 $400 $400 $400 $400
$500 $500 $500 $500 $500
FJ
What is the SI unit of pressure?
Answer…
Pascal
100
500 kPa = _____ mm Hg
Answer…
3,750 mm Hg
500 kPa X 1,000 Pa X 1 mm Hg
1 kPa
133.322 Pa
200
If pressure, volume, and
temperature are known, what
variable can be found using the
ideal gas law?
Answer…
PV = nRT
Moles
300
A sample of a gas has a pressure
of 3.00 atm at 25˚C. What would
the gas pressure be at 52˚C if the
volume remains constant?
Answer…
P1 = P2
T1 T2
(Temp must be in Kelvin)
3.27 atm
400
A 1.00 L sample of a gas has a
mass of 1.92 g at STP. What is
the molar mass of the gas?
Answer…
PV = nRT
(1 atm) (1 L) = n (.0821) (273 K)
n = .0446 moles
molar mass = g/mol
1.92 g
.0446 moles
43.0 g/mol
500
Why is the emulsifying agent
lecithin added to an oil-water
mixture, such as in salad
dressing?
Answer…
Emulsifying agents have
both polar and non-polar
ends and act like a bridge
to link the two phases so
they don’t separate.
100
What is the volume of a 0.555 M
NaOH solution that contains
1.90 mol NaOH?
Answer…
M = moles
liter
0.555 M = 1.90 moles
? Liter
3.42 L
200
Which of the following is a
molecular compound that ionizes
in water?
1.
2.
3.
4.
C6H12O6
Cl2
HCl
C6 H6
Answer…
HCl
H+ + Cl –
HCl
300
Colligative properties depend on…
Answer…
The concentration of the
solute particles.
(It doesn’t matter WHAT the solute
is, just HOW MUCH there is)
400
What is the concentration, in
mol/L, if 1.00 g of NaCl was
dissolved in water to make 100 mL
of solution?
Answer…
1.00 g NaCl X 1 mole NaCl
58.5 g NaCl
.0171 mol NaCl
.10 L
0.171 M
500
What is the equilibrium constant
expression for the following
reaction?
Fe(OH)3 (s)
Fe3+(aq) + 3 OH- (aq)
Answer…
Keq =
3+
[Fe ]
3
[OH ]
(Solids are not included in Keq
expressions)
100
Which 2 processes are at equilibrium in
a saturated sugar solution?
1.
2.
3.
4.
evaporation/condensation
dissolving/crystallization
decomposition/synthesis
ionization/recombination
Answer…
Dissolving/crystallization
The solute is dissolving and
recrystallizing at the same rate.
200
The common-ion effect
1.
2.
3.
4.
promotes condensation
promotes evaporation
reduces ionization
increases solubility
Answer…
Reduces ionization
300
What happens if the temperature
is raised in the following reaction
at equilibrium?
X + Y
XY + 25 kJ
Answer…
The equilibrium will shift
LEFT and more reactants
will be made.
400
What is the solubility product
constant, Ksp, of barium sulfate
(BaSO4) if a saturated solution
is 1.03 X 10-5 M?
Answer…
Ba(SO4) (s)
1.03 X
10-5 M
Ba2+(aq) + SO42- (aq)
1.03 X
10-5 M
1.03 X 10-5 M
Ksp = [Ba2+] [SO42-]
Ksp = (1.03 X 10-5 ) 2
1.06 X
-10
10
500
What does “pH” stand for?
Answer…
Power of Hydrogen
100
If a solution has a pH of 12,
is it acidic, neutral, or basic?
Answer…
Basic
200
What is the molarity of an HCl
solution if 150.0 mL is neutralized
in a titration by 40.0 mL of 0.600 M
NaOH?
Answer…
.160 M
300
The pH of a solution is 10. What is
the [OH-]?
Answer…
[H3O+] = 10– pH
[H3O+] = 10-10
[H3O+] = 1.00 X 10-10 M
-14
-10
1.00 X 10 = 1.00 X 10 [OH ]
[OH-] = 0.0001
400
What is the pH of a 1 X
KOH solution?
-5
10 M
Answer…
KOH
K+ + OH1 X 10-5
1 X 10-5
1.00 X 10-14 = 1 X 10-5 [H3O+]
[H3O+] = 1 X 10-9 M
pH = - log (1 X 10-9)
pH = 9
500
Conversation in the
laboratory…
L__ G__
Answer…
Lab Gab
100
Volumetric glassware that was
washed, but not dried…
W__ B____
Answer…
Wet Buret
200
When acid is added, so that the
original substance is neutralized…
B___ E____
Answer…
Base Erase
300
Contamination of a homogeneous
mixture…
S_______ P________
Answer…
Solution Pollution
400
Mass to volume ratio deeply
concentrating…
D______ I________
Answer…
Density Intensity
500
Daily Double
How much do you want
to wager?
Daily Double
FINAL
JEOPARDY
CATEGORY:
Chemistry Rhyme
Time
How much do you want
to wager? Proceed…
A very famous substance
composed of two or more
elements…
R_______ C_______
Proceed…
Renowned Compound
Proceed…
Thanks for
PLAYING!