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Worksheets5/22 Final Exam Review
Total questions: 40
Worksheet time: 1hrs 3mins
What is the formula of the ion hydrogen sulfite, which has a charge of −1?
SO3 -1
SO4 -1
HSO3 -1
HSO4 -1
Which of the following is the correctly balanced equation for the reaction when the sodium phosphate and copper (II) chloride mixed and reacted.
A 2 CuCl2 (aq) + Na3PO4 (aq) --> Cu2PO4 (s) + 3 NaCl2 (aq)
B Cu2Cl (aq) + Na3PO4 (aq) --> Cu2PO4 (s) + 3 NaCl (aq)
C 3 CuCl2 (aq) + 2 Na3PO4 (aq) --> Cu3(PO4)2 (s) + 6 NaCl (aq)
D Cu2Cl (aq) + 2 Na3PO4 (aq) --> Cu3(PO4)2 (s) + Na3Cl (aq)
A 2 CuCl2 (aq) + Na3PO4 (aq) --> Cu2PO4 (s) + 3 NaCl2 (aq)
B Cu2Cl (aq) + Na3PO4 (aq) --> Cu2PO4 (s) + 3 NaCl (aq)
C 3 CuCl2 (aq) + 2 Na3PO4 (aq) --> Cu3(PO4)2 (s) + 6 NaCl (aq)
D Cu2Cl (aq) + 2 Na3PO4 (aq) --> Cu3(PO4)2 (s) + Na3Cl (aq)
Which of the following has the highest mass?
50.0 g water
50.0 mol NaCl
50.0 molecules carbon dioxide
50.0 L of oxygen at STP
Which of the elements in the following reaction has been reduced?
Zn + 2H+ → Zn2+ + H2
Zinc
Hydrogen
Both Hydrogen and Zinc
Neither Hydrogen nor Zinc
Solid zinc oxide is added to hydrochloric acid to form zinc chloride in water. How many moles of zinc chloride will be produced when 112 grams of zinc oxide is used?
ZnO + 2 HCl → ZnCl2 + H2O
1.38 mols
3.07 mols
56.0 mols
112 mols
The equation for the formation of lithium bromide is: Li + Br --> LiBr
If 5.0 grams of each reactant are used. Which substance is the limiting reagent?
Lithium
Bromine
Lithium bromide
There is no limiting reagent
The temperature of a gas in a rigid steel container is increased from 100 K to 200 K. Which of the following is the most likely effect of this change on the other three variables used to describe the behavior of a gas?
The pressure of the gas is doubled, while the volume and mass remain constant.
The pressure and volume of the gas are doubled, while the mass remains constant.
The volume of the gas is halved, while the pressure and the mass remain constant.
The mass and volume of the gas is halved, while the pressure remains constant.
At STP, which of the following would have the same number of molecules at 1 L of C2H4 gas? Assume that each behaves as an ideal gas.
0.5 L of H2 gas
1 L of Ne gas
2 L of H2O
3 L of Cl2 gas
All of the following containers have one mole of gas and have the same volume and pressure. Which container has the molecules with the slowest average kinetic energy?
Container 1: 100 K
Container 2: 200 K
Container 3: 300 K
Container 4: 400 K
Use the solubility rules to determine which compound will precipitate out of solution when an aqueous solution of Na2SO4 is combined with an aqueous solution of Pb(NO3)2 .
PbSO4
Pb(SO4)2
Na2SO4
Na(NO3)2
Use solubility rules to determine which product is insoluble?
(NH4)2Cr2O7
Ca(OH)2
NH4OH
CaCr2O7
Which of the following compounds are soluble in water?
I. AgNO3
II. KNO3
III. CaNO3
I only
II only
II and III
All of the above
What volume in milliliters of concentrated HCl (12 M) is needed to make 1500 mL of a 3.5 M solution?
0.44 mL
5.1 mL
440 mL
28,000 mL
What is the molarity of iron (III) nitrate, made from 10 mL of a 1.00 M solution, and then diluted by adding 90 mL water?
0.1 M
10 M
1000 M
10,000 M
The stronger the electrolytes, the higher the conductivity.
True
False
1
2
3
4
preventing the funnel from slipping during filtration
preventing crystals from forming on the filter paper
preventing impurities from collecting in the filter paper
preventing the funnel from leaking during the filtration
The base Ba(OH)2 neutralizes the acid H2SO4. Which salt is produced?
BaH2
BaSO4
BaH2S
BaO4
Students tested an unknown solution with a pH meter. The meter indicated that the solution has a pH of 10.3. Based on this information, what can the students correctly infer about the unknown solution?
The unknown solution contains sodium chloride.
The unknown solution is moderately basic.
The unknown solution is a poor electrical conductor.
The unknown solution is a heterogeneous mixture.
What process takes place when the average kinetic energy of a liquid’s particles decreases?
sublimation
condensation
boiling
melting
A sample of a compound is added to distilled water in a clean beaker. A reaction occurs, and the water temperature drops rapidly. Which of the following statements is best supported by this observation?
An endothermic reaction occurred.
The water was originally warmer than the compound.
The beaker was contaminated by another compound.
A dehydration reaction occurred.
endothermic reaction
exothermic reaction
How do you calculate Enthalpy of a reaction?
ΔH = ΔHproducts - ΔHreactants
ΔT = q / mC
ΔG = ΔH -TΔS
E = mc2
Ca(OH)2 -> CaO + H2O
ΔHf in kJ/mol:
Ca(OH)2 -983.2
CaO -634.9
H2O -285.5
A piece of silver releases 202.8 J of heat while cooling 65.0 °C. What is the mass of the sample? Silver has a specific heat of 0.240 J/g °C.
0.748 grams
3.12 grams
4.18 grams
13.0 grams
85209At = ___ + 24He
614C = ___ + -10e
Which of the following is a correct statement about nuclear fusion and nuclear fission?
Nuclear fission gives off radiation while nuclear fusion does not.
Both nuclear fusion and fission give off radiation.
Nuclear fusion gives off radiation while nuclear fission does not.
Neither nuclear fusion and fission give off radiation.
Four chemical solutions are shown above. Which of the following solutions would correspond to a weak electrolyte?
IV
III
II
I and II
What type of a solution is 60g NaNO3 at 40ºC in 100g H2O?
Saturated
Unsaturated
Supersaturated
What type of a solution is 260g sugar at 50ºC in 100g H2O?
Saturated
Unsaturated
Supersaturated
What type of a solution is 100g KNO3 at 40ºC in 100g H2O?
Saturated
Unsaturated
Supersaturated
