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3.8 This problem refers to the reactions shown in Eqs. 3.12a and 3.12b. When equal numbers...
1. 2. 3. Balancing Oxidation-Reduction Reactions 1. Assign oxidation numbers. 2. Separate into oxidation and reduction...
1. 2. 3.
Balancing Oxidation-Reduction Reactions 1. Assign oxidation numbers. 2. Separate into oxidation and reduction half reactions. 3. Balance each half reaction using the following steps: a. Balance all elements except oxygen or hydrogen. b. Balance oxygen by adding H20. c. Balance hydrogen by adding H*. d. Balance charge by adding electrons: Electrons go on the RIGHT (product side) for OXIDATION reactions. Electrons go on the LEFT (reactant side) for REDUCTION reactions. e. In BASIC solution, do this additional...
Page 10 of 12 BA 25.3 An Introduction to Chemical Reactions 4. In the reactions shown...
Page 10 of 12 BA 25.3 An Introduction to Chemical Reactions 4. In the reactions shown below, circle the reactant(s) and underline the product(s). 2 Na(s)+CL(g) 2 NaCl(s) а. b. CaCOs(s) CaO(s) +CO:(g) Cu(NOs)(aq)+ 2 NAHCO (s) CUCO:(s)+2 NANO, (aq) + H&Ol) + CO:(g) с. Here are some descriptions of chemical reactions. Read the description, and then answer the questions. 5. Metallic iron and solid sulfur react to form iron (II) sulfide. a. 1. Write the symbols of the reactants....
12. Which is the major product of the reaction shown? (a) (b) (c) (d) 13. What...
12. Which is the major product of the reaction shown? (a) (b)
(c) (d) 13. What are all of the possible products formed in the
following reaction? (choose all correct answers) (a) (b) (c) (d)
(e) (f) 14. The three compounds below can form a carbocation in the
presence of H2O and H2SO4. Which ones will form the same
carbocation? (a) I and II (b) I and III (c) II and III (d) all
three will form the same carbocation...
SOLVED PROBLEM 7-3 When the following compound is heated in methanol, several different products are formed....
SOLVED PROBLEM 7-3 When the following compound is heated in methanol, several different products are formed. Propose mechanisms to account for the four products shown. CH-Br CH heat CH,OH -OCH; + -OCH PARTIAL SOLUTION With no strong base and a good ionizing solvent, we would expect a first-order reaction. But this is a primary alkyl halide, so ionization is difficult unless it rearranges. It might rearrange as it forms, but we'll imagine the cation forming then rearranging. H. Br: CH...
198 CHAPTER 5 Chemical Reactions Practice Problems 5.24 Determine if the reactions in Problem 500 reversible or ir...
198 CHAPTER 5 Chemical Reactions Practice Problems 5.24 Determine if the reactions in Problem 500 reversible or irreversible. 5.25 Write the products and balance the follos tion for the complete combustion of ethane CH() + O2(g) —? 5.21 Categorize the following reactions as synthesis, decomposition, or exchange reactions in the forward direction: a. Cuo(s) + 2HCl(aq) —> CuCl2(aq) + H2O(1) b. CH,206(ag) -> 2C,H,O(aq) + 2CO (9) c. 2H269) + O2(8) = 2H2O) 5.22 Categorize the following reactions as synthesis,...
problem set 7: questions 1-5 INTRODUCTION TO CHEMISTRY (Problem set 77 1. Balance the following reactions...
problem set 7: questions 1-5
INTRODUCTION TO CHEMISTRY (Problem set 77 1. Balance the following reactions by adjusting the coefficients. Then identify which class of reaction, Synthesis single replacement, decomposition, double replacement de composition, double replacement or oxidation, each belongs to a) Cal . HOn - Ca(OH). Hall b) NO. O NO All(OH) - N06 HOM Fes) + H,SO. — Fe (SO4). He e) Alm . Br - AlBryte 2. Explain why the interpretation that 1.0 gram of carbon (C)...
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible,...
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible, predict which one will be the major product. Explain your answers, showing the degree of substitution of each double bond in the products. 2. Which of these reactions are likely to produce both elimination and substitution products? (a) 2-bromopentane + NaOCHz (b) 3-bromo-3-methylpentane + NaOMe (Me = methyl, CH3) (C) 2-bromo-3-ethylpentane + NaOH
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible,...
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible, predict which one will be the major product. Explain your answers showing the degree of substitution of each double bond in the products. 2. Which of these reactions are likely to produce both elimination and substitution products? (a) 2-bromopentane + NaOCH3 (b) 3-bromo-3-methylpentane NaO (c) 2-bromo-3-ethylpentane NaOH Me (Me= methyl, CH3)
I have a question over Problem 9.36 from David Klein’s Chapter 9 on Addition Reactions of...
I have a question over Problem 9.36 from David Klein’s Chapter 9
on Addition Reactions of Alkenes.
I’ve noted acid-catalyzed hydrations in Chapter 9 don’t seem to
note anything about their properties of syn- or anti- addition
processes.
Why don’t acid-catalyzed hydrations contain descriptions of
whether they’re anti- or syn- additions? I know that the compound
in Problem 9.36 doesn’t contain a hydrogen whose stereochemistry
would matter, but what about the acid-catalyzed hydrations with
hydrogens whose stereochemistry does matter?
9.36...
For letters h & i : For each of the following reactions, predict the major mechanistic pathway (SN1/SN2/E1/E2...
For
letters h & i :
For each of the following reactions, predict the major
mechanistic pathway (SN1/SN2/E1/E2) and the major organic
products
1. (cont.) (h) НСОН CHB -CHBr HCOH - (0) CH,CH,CH,CH,Br- NH 2. For each of the following indicate which reaction will occur faster. Explain your reasoning. (No credit will be given for guesses) (a) The reaction of (CH),CBr with 0.001M aqueous NaOH or 0.10M aqueous NaOH (b) The reaction of 2-bromobutane with NaOH in DMSO or NaSH...
1. 2. 3.
Balancing Oxidation-Reduction Reactions 1. Assign oxidation numbers. 2. Separate into oxidation and reduction half reactions. 3. Balance each half reaction using the following steps: a. Balance all elements except oxygen or hydrogen. b. Balance oxygen by adding H20. c. Balance hydrogen by adding H*. d. Balance charge by adding electrons: Electrons go on the RIGHT (product side) for OXIDATION reactions. Electrons go on the LEFT (reactant side) for REDUCTION reactions. e. In BASIC solution, do this additional...
Page 10 of 12 BA 25.3 An Introduction to Chemical Reactions 4. In the reactions shown below, circle the reactant(s) and underline the product(s). 2 Na(s)+CL(g) 2 NaCl(s) а. b. CaCOs(s) CaO(s) +CO:(g) Cu(NOs)(aq)+ 2 NAHCO (s) CUCO:(s)+2 NANO, (aq) + H&Ol) + CO:(g) с. Here are some descriptions of chemical reactions. Read the description, and then answer the questions. 5. Metallic iron and solid sulfur react to form iron (II) sulfide. a. 1. Write the symbols of the reactants....
12. Which is the major product of the reaction shown? (a) (b)
(c) (d) 13. What are all of the possible products formed in the
following reaction? (choose all correct answers) (a) (b) (c) (d)
(e) (f) 14. The three compounds below can form a carbocation in the
presence of H2O and H2SO4. Which ones will form the same
carbocation? (a) I and II (b) I and III (c) II and III (d) all
three will form the same carbocation...
SOLVED PROBLEM 7-3 When the following compound is heated in methanol, several different products are formed. Propose mechanisms to account for the four products shown. CH-Br CH heat CH,OH -OCH; + -OCH PARTIAL SOLUTION With no strong base and a good ionizing solvent, we would expect a first-order reaction. But this is a primary alkyl halide, so ionization is difficult unless it rearranges. It might rearrange as it forms, but we'll imagine the cation forming then rearranging. H. Br: CH...
198 CHAPTER 5 Chemical Reactions Practice Problems 5.24 Determine if the reactions in Problem 500 reversible or irreversible. 5.25 Write the products and balance the follos tion for the complete combustion of ethane CH() + O2(g) —? 5.21 Categorize the following reactions as synthesis, decomposition, or exchange reactions in the forward direction: a. Cuo(s) + 2HCl(aq) —> CuCl2(aq) + H2O(1) b. CH,206(ag) -> 2C,H,O(aq) + 2CO (9) c. 2H269) + O2(8) = 2H2O) 5.22 Categorize the following reactions as synthesis,...
problem set 7: questions 1-5
INTRODUCTION TO CHEMISTRY (Problem set 77 1. Balance the following reactions by adjusting the coefficients. Then identify which class of reaction, Synthesis single replacement, decomposition, double replacement de composition, double replacement or oxidation, each belongs to a) Cal . HOn - Ca(OH). Hall b) NO. O NO All(OH) - N06 HOM Fes) + H,SO. — Fe (SO4). He e) Alm . Br - AlBryte 2. Explain why the interpretation that 1.0 gram of carbon (C)...
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible, predict which one will be the major product. Explain your answers, showing the degree of substitution of each double bond in the products. 2. Which of these reactions are likely to produce both elimination and substitution products? (a) 2-bromopentane + NaOCHz (b) 3-bromo-3-methylpentane + NaOMe (Me = methyl, CH3) (C) 2-bromo-3-ethylpentane + NaOH
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible, predict which one will be the major product. Explain your answers showing the degree of substitution of each double bond in the products. 2. Which of these reactions are likely to produce both elimination and substitution products? (a) 2-bromopentane + NaOCH3 (b) 3-bromo-3-methylpentane NaO (c) 2-bromo-3-ethylpentane NaOH Me (Me= methyl, CH3)
I have a question over Problem 9.36 from David Klein’s Chapter 9
on Addition Reactions of Alkenes.
I’ve noted acid-catalyzed hydrations in Chapter 9 don’t seem to
note anything about their properties of syn- or anti- addition
processes.
Why don’t acid-catalyzed hydrations contain descriptions of
whether they’re anti- or syn- additions? I know that the compound
in Problem 9.36 doesn’t contain a hydrogen whose stereochemistry
would matter, but what about the acid-catalyzed hydrations with
hydrogens whose stereochemistry does matter?
9.36...
For
letters h & i :
For each of the following reactions, predict the major
mechanistic pathway (SN1/SN2/E1/E2) and the major organic
products
1. (cont.) (h) НСОН CHB -CHBr HCOH - (0) CH,CH,CH,CH,Br- NH 2. For each of the following indicate which reaction will occur faster. Explain your reasoning. (No credit will be given for guesses) (a) The reaction of (CH),CBr with 0.001M aqueous NaOH or 0.10M aqueous NaOH (b) The reaction of 2-bromobutane with NaOH in DMSO or NaSH...
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