1025C Name: _________________
Module Eight Homework Packet
Module Eight: Solutions/Oxidation & Reduction (Chapter 13, 14 & 17)
K. _____ (05) Key Terms Chap 13 p396, Chap 14 p433,
______(65) Total = ______% Chapter 13,14,17
M-8 Required Homework:
______(50) M-8 Pretest Hardcopy Homework Packet (buff) (Submit on Exam#4Day)
______(50) M-8 Multiple Choice (MC) Practice (Blackboard Online)
_____ (15) Key Terms Chap 13 p396,
Chap 14 p433, (Blackboard Online)
G2. ______(20) Hard Copy (Acid Media) Writing Net Ionic Reactions Homework (Sect 14.11)
H1. ______(30) Hardcopy REDOX Homework Pre/Post Lab Required)
H2. ______(48) REDOX Lab (12 Rounds)
M-8 Extra Credit:
G3. ______(00) Hard Copy (Basic Media) Writing Net Ionic Reactions Homework (Sect 14.11)
H3. ______(00) Hardcopy Redox Homework Post Lab Optional) (12 equations 5A-5B-2N)
H4. ______(00) Hardcopy Redox Homework Post Lab Optional) (Bonus Challenge)
Part A: Solution Properties 05 points
List five of the six properties of a true solution:
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Module 8: Solutions Chapter 13
Part B: Factors Affecting Rate of Dissolving 05 points
State two factors greatly affecting the solubility of a gas in a liquid and explain:
What is the main factor affecting the solubility of a liquid in a liquid and explain the rule:
State four factors which governs the Rate of dissolving a solid in a liquid:
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Part C: Writing Ionization Reactions 05 points
(Strong Acids/Weak Acids/Strong Bases/Weak Bases/
Soluble Salts and Oxides of Nonmetals and Metals)
Write the ionization reactions for the following:
(1) Strong Acid: HCl (aq)
(2) Weak Acid: HC2H3O2 (aq)
(3) Strong Base: NaOH (aq)
(4) Weak Base: NH3 (aq)
(5) Soluble Salts: NaCl (aq)
(6) Oxides of Nonmetals: CO2 (g)
(7) Oxides of Metals: CaO (s)
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Part D: Solution Preparation Problems 05 points
1. How many grams of solute are needed to prepare 250 ml of a 0.0100 M KMnO4?
2. 20 grams of AgNO3 were placed in a 250 ml volumetric flask, calculate the Molarity of the Solution.
Part E: Solution Dilution/Concentration Problems 05 points
1. How many milliliters of a 12 M HCl (concentrated) are required to make 2.00 L of a 1.00 M HCl?
2. A stock bottle of concentrated nitric acid indicates that the solution is 67.0 HNO3 by mass and has a density of 1.40 g/ml. Calculate the molarity of concentrated nitric acid.
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Part F: Solution Reaction Problems 10 points
Acid-Base Neutralization (15 Points):
1. Calculate the molarity of a Calcium hydroxide solution if 18.50 mL of it requires 28.27 mL of a 0.0125 M HCl to reach its neutralization point.
REDOX Titration: (15 Points)
2. A KMnO4 (aq) solution is to be standardized by titration against As2O3(s), A 0.1156 g sample of As2O3 requires 27.08 mL of KMnO4. What is the molarity of the KMnO4?
As2O3 + MnO4 1- + H2O + H1+ -------> H3AsO4 + Mn 2+
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Module Eight: Part G Rewriting Equations Ionically 10 points
Rewrite the following (unbalanced) equations ionically, cancel spectator ions and then balance the net ionic reactions. Show as ions: soluble salts and strong acids and strong bases; leave as molecules/formula units insoluble salts, weak acids, covalent molecules.
Strong acids are: Perchloric Acid; Hydrochloric Acid; Nitric Acid; Sulfuric Acid; Hydrobromic Acid; Hydroiodic Acid.
Strong bases are Sodium hydroxide, Potassium hydroxide, Calcium hydroxide, Barium hydroxide and Strontium hydroxide
1. KOH (aq) + HNO3(aq) à KNO3(aq) + HOH(l)
2. CuSO4 (aq) + Na2CO3 (aq) à CuCO3 (s) + Na2SO4 (aq)
3. NaOH (aq) + NH4NO3 (aq) à NaNO3 (aq) + NH3 (g) + HOH (l)
4. BaBr2 (aq) + ZnSO4 (aq) à BaSO4 (s) + ZnBr2 (aq)
5. Cr(OH)2 (s) + HCl (aq) à
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Module 8 Part H: Redox Equations 10 points
Balance the following redox equations written in net ionic form:
Acid Media: (5 points)
1. C2O4 2- (aq) + MnO4 1- (aq) + H 1+ (aq) → Mn 2+ (aq) + CO2 (g) + HOH (l)
Basic Media (5 points)
2. Bi2O3 (s) + OH 1- (aq) + OCl 1- (aq) → BiO3 1- (aq) + Cl 1- (aq) + HOH (l)
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Part L: pH Scale Calculations (Section 15.8-15.9) 5 points
What is the pH and pOH of the following solutions:
pOH = 14.00 – pH Kw = 1.00 x 10-14 = [H3O1+][OH1-]
(1) 0.0100 M HCl
(2) 0.0055 M Mg(OH)2
(3) The pH of vinegar is 2.85, calculate the [H3O1+]:
(4) Easy Off Oven Cleaner has a pH of 11.70. What is the [H3O1+] and [OH1-]?
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Part K: Solution Definitions 5 points
Fill in the blank with word for the definition listed:
1.______________When dynamic equilibrium is established between undissolved solute in a
Solution, we say the solution is __.
2. ______________Any solution containing less solute than it could hold at equilibrium is said
To be a(n) _______________solution.
3. ______________That part of a solution which you are dissolving.
4. ______________That part of a solution which does the dissolving (or the media of the
5. ______________are dispersions in which that the dispersed matter has one or more
dimensions in the range of 1 to 1000 nm and has the unique ability to scatter light.
6. ______________of a solution is the number of moles of solute per Liter of solution.
7. ______________of a solution is the grams of solute per 100 grams of solution
8._______________of a solution is the milliliters of solute per 100 milliliters of solution.
9.______________homogeneous mixture of a solute and a solvent.
10._____________ .Any solution containing more solute than it could hold at equilibrium is said
To be a(n) _______________solution.
Define Normality; define equivalent.
What is the difference between a solution, colloidal solution, colloidal suspension, and a suspension