Drill: Calculate the %
composition of:CaCO3 & H2SO4
Review Chapters 4 & 5 in the Kaplan
AP CHM Book.
AP CHM HW•Problems: 3 & 4
•From the Final Review
Drill: Draw ECs, EDDs, QNs, &
possible ox #s for:
Mg Br Mn
Continue on the Midterm
Review
AP CHM HW•Problems: 11 & 12
•From the Final Review
Drill: Calculate the molarity, molality, & mole
fraction of a 1.05 g/mL solution containing
3.00 g of CH3COOH in 17.1 g of water.
Continue on the Midterm
Review
AP CHM HW•Problems: 10 & 13
•From the Final Review
Drill: Calculate the number of
oxygen atoms in 16 g of Fe2(SO4)3
Continue on the Midterm
Review
AP CHM HW•Problems: 22
•From the Final Review
AP Review Drill:When XS HCl is added to 10.0 g of
impure CaCO3, 831 mL CO2 was
collected at 27oC under 150 kPa
pressure. Determine: a) rxn.
b) moles CaCO3 in sample.
c) % CaCO3 in sample.
Chemical Reactions•Predict, balance, &
write the net ionic reaction for each of
the following:
Solutions of zinc(II) sulfate and sodium
phosphate are mixed.
Solutions of silver(I)nitrate and lithium bromide are
mixed.
Solid potassiumis added to asolution of
Copper(II)nitrate.
Aqueous hydrochloric acid is added to a solution
of potassium hydroxide.
Aqueous Acetic acid is added to a solution
of potassium hydroxide.
Equimolar portions of hydrochloric acid & potassium sulfite are
combined.
Excess hydrochloric acid is added to a
solution of potassium sulfite.
Excess nitric acid is added to a solution
of sodium carbonate.
Solid sodium oxide is added to
water.
Aqueous ammonia is added to a solution of
iron(III)chloride
Samples of boron trichloride and
ammonia gas are mixed.
Carbon disulfide vapor is burned in
excess oxygen.
Solid zinc is added to aqueous silver(I) nitrate.
Solid barium carbonate is
heated.
Solid sodium bicarbonate is
heated.
A solution of tin(II)chloride is
added to an acidified solution of potassium
dichromate.
Aqueous ammonia or potassium thiocyanate is added to a solution of copper(II)chloride
Propanol is burned in excess
oxygen.
Sulfur dioxide gas is bubbled through water
Determine % composition of all
elements in Fe2(SO4)3
M combines with O making MO. X combines with K
making K3X.Determine subscripts
for MaXb:
Determine the empirical formula for
a compound containing: 60.0 % C, 8.00 % H,
& 32.0 % O.
Ore Emp % by mass # Form Cu S Fe 1 Cu2S ? ? 0 2 ? 34.6 34.9 30.5 3 ? 55.6 28.1 16.3
The following is 47 % O
HClO HClO2
HClO3HClO4
Drill: Draw LDDs for:
XeCl4 CCl4
SCl4 PCl5
SCl6 ICl3
Drill: Draw LDDs for:
SO2 HNO2
HNO3 C6H6
List & describe 4 types of
intermolecular or Van der Waals
forces:
Predict MP trend for:•Any metal column
•Any nonmetal column
•Columns of corresponding salts
Calculate the volume of NO2 produced at STP when 6.4 mg
N2H4 react with excess oxygen gas forming
NO2 & H2O.
Calculate the mass of CaSO4 produced when
11.1 g CaCl2 react with 250 mL 0.25 M
H2SO4.
In the thermite rxn, 5.1 g of Al2O3 was
produced when 16 g Fe2O3 react with xs
aluminum. Calculate % yield.
Calculate the mass of solid produced when
11.1 g CaCl2 react with 250 mL 0.50 M
Pb(NO3)2.
CxHy is burned in air producing 8.96 L CO2 at STP & 5.4 g of H2O. Calculate: EF of CxHy
CxHy is burned in air producing 4.48 L CO2 at STP & 5.4 g of H2O. b) Calculate the MF if
CxHy gas occupied 2.24 L at STP.
CxHy is burned in air producing 4.48 L CO2 at STP & 5.4 g of H2O. c) Write the balanced rxn
for the combustion reaction.
CxHy is burned in air producing 4.48 L CO2 at STP & 5.4 g of H2O. d) What was the mass
of CxHy burned?
Calculate the volume of 2.0 moles of gas
under 83.1 kPa pressure at 127oC:
Calculate the mass of 831 L of
CO2 at 167oC under 150 kPa
pressure:
Calculate the molecular mass of
5.0 g of gas in 831 mL under 250
kPa at 227oC
Calculate the molecular mass of a
40 % solution of molecular solute in water that boils at
101.024oC
30 g C3H6NF was dissolved in 50 g
C6H12O at 27oC making a 0.800 g/mL solution. Calculate X, mo, M, ,
VP, BP, & FP.
Drill:Calculate H, G, & S in the production of 831mL
ammonia at 227oC under
250.0 kPa pressureCompd NH3
Hfo -46.1
Gfo -16.5
Lab Results: Cup H2O NaOH Thermo
5.0 g 50.0 g 4.0 g 15.0 g Ti = 22.0
oC Tf = 27.0
oC
Cmpd NaOH Na+ OH-
Hf
o -425.6 -240.1 -230.0
Determine: theoretical and experimental heat changes
A B: K1 = 2.0 x 10-4
2 A 2 B: K2 = ? 3 A 3 B: K3 = ?
B A: K4 = ? 1/2 A 1/2 B: K5 = ?
When 2.00 g NaOH dissolves in a 1.0 L water in a 2.5 kg calorimeter, the temp. went
from 22.5oC to 26.5oC. Calculate: Ho
soln Cwater = 4.18 J/gK Ccal = 2.00 J/gK
Lab Results: Cal H2O KOH 1500 g 750 g 25.0 g Ti = 22.0
oC Tf = 26.0
oC
Cmpd KOH K+ OH-
Hf
o -424.7 -246.1 -230.0
Determine: theoretical and experimental heat changes
Lab Results: Cal H2O KOH 1500 g 750 g 25.0 g Ti = 22.0
oC Tf = 26.0
oC
Cmpd KOH K+ OH-
Hf
o -424.7 -246.1 -230.0
Determine: theoretical and experimental heat changes
Drill: Hrxn = -1500 kJ
Srxn = +300 J/K
Calculate Teq:
Experimental ResultsExp # T [A] [B] Rate
1) 27oC 0.10 0.10 2
2) 27oC 0.30 0.10 18
3) 27oC 0.10 0.20 4
4) 77oC 0.10 0.10 20
Solve Rate ExpressionA + B C + D fast
4C + A 2G fast
4D + B 2K fast
G + K Q + W slow
Q + W Prod. fast
1A + 1B 1C + 1DCalculate the equilibrium
concentrations of each species when 2.0 M A is
mixed with 3.0 M B.Kc = 0.25
1A + 1B 1C + 1DCalculate the equilibrium
concentrations of each species when 150 ml 2.0 M A is mixed with 100.0
ml 2.0 M B. Kc = 0.25
Calculate [H+],[OH-], pH, & pOH of 0.010 M HC7H5O2 (HBz)
Ka = 6.4 x 10-5
Calculate the Ka of 0.20 M Hquack
when it ionized 5.0 % in an aqueous
solution.
The pH of a 0.79 M solution of Hnut is 3.10.
Calculate its Ka
Calculate [H2CO3], [HCO3
-], [CO3-2], [H+],
[OH-], & pH of 0.44 M H2CO3 Ka1 = 4.4 x 10-7
Ka2 = 4.7 x 10-11
Calculate [H+],[OH-], pH, & pOH of 0.10 M HC7H5O2 (HBz)
in 0.20 M KBzKa = 6.4 x 10-5
Drill:Calculate the pH of 0.10 M HF:Ka = 4.0 x 10-4
Calculate [H+],[OH-], pH, & pOH of 0.10
M HFin 0.20 M KFKa = 4.0 x 10-4
Calculate [H+],[OH-], pH, & pOH of 0.20
M KFKa = 4.0 x 10-4
Calculate the solubility of MX(s)
Ksp MX = 2.5 x 10-9
Calculate the solubility of MX2
Ksp = 3.2 x 10-11
MNO3 is added to a solution of 0.10 M KX
& 0.10 M K2Y.Ksp MX = 3.6 x 10-7
Ksp M2Y = 2.5 x 10-11
Calculate the solubility of MX2
in 1.0 M M(NO3)2 Ksp = 3.6 x 10-11
Drill: Describe the lab to
determine rxn rate expression.
Describe the lab to determine the molarity of an
acid.
Describe the lab to determine % yield of heat of
rxn.
Drill: Determine all when a cell with an Al electrode in AlCl3(aq) is connected to a cell with
a Zn electrode in
ZnBr2(aq)
Determine the rxn that takes place when
electricity is passed through two Pt
electrodes in CdCl2(aq)
• Determine the voltage of a cell with a copper
electrode in 0.10 M CuNO3 & a zinc
electrode in 1.0 M
Zn(NO3)2 at 27oC
Calculate the years required to plate 216 kg onto the cathode when a 96.5 mAmp current is applied to a solution of
AgNO3
Drill: List & describe all of the
radioactive particles.
Determine Products:1) emission of Ra-226 2) emission of Ba-139
A sample diminishes from 0.500 % C-14 to
0.00300 % C-14 in _____ years
List & describe the 10 organic prefixes dealing with carbon
chain length.
Name & draw all organic functional groups containing
either oxygen and/or nitrogen.
A compound is66.5 % C, 9.44 % H, & the rest is O.
Determine its empirical formula.