Chapter 7
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Chapter 10
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100
Calculate the theoretical yield given the following:
Percent yield: 56%
Actual yield: 8.9 g
15.89 g
100
What type of reaction is this?
AgNO3(aq) + KCl(aq) —>AgCl(s) + KNO3(aq)
Precipitation reaction
100
If a process requires energy, what will the sign of enthalpy be?
positive
100
Consider the phase transition from liquid water to solid ice. What is the sign of enthalpy for this process?
negative
100
Name one study strategy that you plan on using for this exam.
Examples:
-Old exams
-Practice Questions
-YouTube videos
-Flashcards
200
Balance the following reaction:
CO2 + H2O → C6H12O6 + O2
6CO2 + 6H2O → C6H12O6 + 6O2
200
What are the spectator ions in the following precipitation reaction?
NaF(aq)+AgNO3(aq)→AgF(s)+NaNO3(aq)
Na+ and NO3-
200
What is the change in internal energy if 18 kJ of work are done on the system and the system releases 2 kJ of heat?
20 kJ
200
What does 2 represent on the heating curve below?
Fusion (melting)
200
What are the units of molarity?
moles/liters
300
How many particles are contained within 75.3 g of NaCl?
7.76 x 1023 particles NaCl
300
How many mL of 5.30 M HCl stock solution are required to make a 300.0 mL solution of 0.500 M HCl?
28.3 mL HCl
300
Use the following balanced equation:
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)
What is the standard enthalpy of this reaction?
Δ Hof (CH4(g))= -74.8 kJ/mol
Δ Hof (O2(g))= 0 kJ/mol
Δ Hof (CO2(g))= -393.5 kJ/mol
Δ Hof (H2O(l))= -285.8 kJ/mol
-890.3 kJ
300
If 100 kJ of heat is applied, how many g of iron are produced according to the following equation?
2Al(s)+Fe2O3(s)⟶2Fe(s)+Al2O3(s) ΔH=815.5kJ
6.85 g Fe
300
What is the M1V1=M2V2 equation used for?
Dilution questions
400
Use the following balanced reaction:
2Al + 6HCl → 2AlCl3 + 3H2
If 26.5 g of Al and 87.3 g of HCl react, what is the mass of H2 that will form?
2.41 g H2
400
What is oxidized in the following oxidation reduction reaction?
Mg(s)+Cl2(g)⟶MgCl2(s)
Magnesium (Mg)
400
Use the following balanced reaction:
H2(g) + F2(g) → 2 HF(g)
Estimate the enthalpy of this reaction using bond energies.
H-H Bond energy= 436 kJ/mol
F-F Bond energy= 159 kJ/mol
H-F Bond energy= 565 kJ/mol
-535 kJ
400
Use the following balanced reaction:
2H2O(g) → 2H2(g) + O2(g)
H-H Bond energy= 436 kJ/mol
O-O Bond energy= 142 kJ/mol
O-H Bond energy= 467 kJ/mol
529 kJ
400
Name all of the weak acids that you need to know for the exam.
HF, HCN, CH3COOH
500
Use the following balanced reaction:
SiCl4 + 4H2O → H4SiO4 + 4HCl
In this reaction, 45.6 g of SiCl4 and 26.4 g H2O are reacted. How much excess reactant is left at the end of the reaction?
7.104 g H2O
500
Use the following balanced reaction:
AgNO3 (aq) + NaCl (aq) -> AgCl (s) + NaNO3 (aq)
123 mL of a 1.00 M solution of NaCl is mixed with 72.5 mL of a 2.71 M solution of AgNO3. What is the mass of AgCl(s) formed in the reaction?
17.6 g AgCl
500
Find the enthalpy of the following reaction:
H2SO4(l) → SO3(g) + H2O(g)
H2S(g)+2O2(g)→H2SO4(l) ΔH=-235.5kJ
H2S(g)+2O2(g)→SO3(g)+H2O(l) ΔH=-207 kJ
H2O(l)→H2O(g) ΔH=44 kJ
72 kJ
500
Find the enthalpy of the following reaction:
CO2(g) → C(s) + O2(g)
H2O(l)→H2(g)+1/2O2(g) ΔH=643 kJ
C2H6(g)→2C(s)+3H2(g) ΔH=190.6 kJ
2CO2(g)+3H2O(l)→C2H6(g)+7/2O2(g) ΔH=3511.1 kJ
886 kJ
500
Name all of the strong acids that you need to know for the exam.
HCl, HBr, HI, HNO3, HClO4 and H2SO4.