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Chemistry Homework Problems

Answers 2

7. The structural formula gives us the connectivity of the atoms in the molecule or ion, as well as a schematic representation of their arrangement in space. Empirical formulas tell us only the ratios of the atoms present. The condensed structural formula of dimethylsulfide is (CH3)2S.

Numerical Problems 2

1.  Write the formula for each compound.

a.  magnesium sulfate, which has 1 magnesium atom, 4 oxygen atoms, and 1 sulfur atom

b.  ethylene glycol (antifreeze), which has 6 hydrogen atoms, 2 carbon atoms, and 2 oxygen atoms

c.  acetic acid, which has 2 oxygen atoms, 2 carbon atoms, and 4 hydrogen atoms

d.  potassium chlorate, which has 1 chlorine atom, 1 potassium atom, and 3 oxygen atoms

e.  sodium hypochlorite pentahydrate, which has 1 chlorine atom, 1 sodium atom, 6 oxygen atoms, and 10 hydrogen atoms

2. Write the formula for each compound.

a.  cadmium acetate, which has 1 cadmium atom, 4 oxygen atoms, 4 carbon atoms, and 6 hydrogen atoms

b.  barium cyanide, which has 1 barium atom, 2 carbon atoms, and 2 nitrogen atoms

c.  iron(III) phosphate dihydrate, which has 1 iron atom, 1 phosphorus atom, 6 oxygen atoms, and 4 hydrogen atoms

d.  manganese(II) nitrate hexahydrate, which has 1 manganese atom, 12 hydrogen atoms, 12 oxygen atoms, and 2 nitrogen atoms

e.  silver phosphate, which has 1 phosphorus atom, 3 silver atoms, and 4 oxygen atoms

3. Complete the following table by filling in the formula for the ionic compound formed by each cation-anion pair.

4. Write the empirical formula for the binary compound formed by the most common monatomic ions formed by each pair of elements.

a.  zinc and sulfur

b.  barium and iodine

c.  magnesium and chlorine

d.  silicon and oxygen

e.  sodium and sulfur

5. Write the empirical formula for the binary compound formed by the most common monatomic ions formed by each pair of elements.

a.  lithium and nitrogen

b.  cesium and chlorine

c.  germanium and oxygen

d.  rubidium and sulfur

e.  arsenic and sodium

6. Write the empirical formula for each compound.

a.  Na2S2O4

b.  B2H6

c.  C6H12O6

d.  P4O10

e.  KMnO4

7. Write the empirical formula for each compound.

a.  Al2Cl6

b.  K2Cr2O7

c.  C2H4

d.  (NH2)2CNH

e.  CH3COOH

  Answers

1.

a.  MgSO4

b.  C2H6O2

c.  C2H4O2

d.  KClO3

e.  NaOCl·5H2O

3.

5.

a.  Li3N

b.  CsCl

c.  GeO2

d.  Rb2S

e.  Na3As

7. 

a.  AlCl3

b.  K2Cr2O7

c.  CH2

d.  CH5N3

e.  CH2O

IonK+Fe3+NH4+Ba2+
ClKCl   
SO42−    
PO43−    
NO3    
OH    
IonK +Fe 3+NH 4 +Ba 2+
Cl −KClFeCl3NH4ClBaCl2
SO 4 2−K2SO4Fe2(SO4)3(NH4)2SO4BaSO4
PO 4 3−K3PO4FePO4(NH4)3PO4Ba3(PO4)2
NO 3 −KNO3Fe(NO3)3NH4NO3Ba(NO3)2
OH −KOHFe(OH)3NH4OHBa(OH)2
  ACPHS Home | Organic Chemistry IOrganic Chemistry II  | Lecture  |Laboratory 

Organic Chemistry II
Homework Problems
Suggested homework problems are listed on the course syllabus for each topic area/chapter.  Problems from OWL for each designated topic are also recommended.  These problems will not be graded or collected. Solutions for the selected problems below are provided in pdf format by clicking on the solutions link for each problem set.  Recognize that these are simple problems unlike exam questions, but they are intended to aid students in identifying their weaknesses early on in the studying process.  They are neither intended to be all inclusive of the material covered on an exam or in the format of exam questions.  Instead, these problems are intended to help students focus on concepts and self-evaluate their learning.  Doing homework problems from the textbook and OWL can be viewed as a "first phase"evaluation of the student's understanding of the concepts.  Old exams are also provided on the exams and quizzes page of the website as study aids to illustrate examples of exam-type multiple choice questions.   The table below lists a few suggestions for how to approach working through homework problems and old exam questions:

Try to do problems BEFORE the material is covered in lecture.  Even if you can't do the problems, you will be focused and ready to accept and process the information necessary to solve the problems once the material is discussed in lecture. 
Let yourself get a little frustrated when working through the problems.  When it gets too difficult, look up the answer and work backwards through the problem.  Figure out why the answer that is given is correct.  When you first get started, use all your resources;  have your notebook and textbook open, work in groups.  Get the information first; test yourself later.
DO HOMEWORK PROBLEMS/OLD EXAM PROBLEMS  EVERYDAY!!! Going over your notes is important but you will not be asked to regurgitate your notes on an exam.  The exams consist of PROBLEMS.  DO NOT EXPECT TO DO WELL ON THE EXAMS IF YOU HAVE NOT SUCCESSFULLY COMPLETED THE  HOMEWORK PROBLEMS.
Focus on problem solving strategies when doing homework problems.  Learning how to do the problem is more important than simply getting the correct answer.


Problem Set
(McMurry, Organic Chemistry, 8th edition)
Solutions
Problem Set #1
17.1, 17.2, 17.5, 17.25, 17.28, 17.29
Problem Set #1: Solutions
Problem Set #2
8.13, 8.26(d,f), 17.41, 17.42, 18.28,
18.30c, 18.35, 18.36
Problem Set #2: Solutions
Problem Set # 3
8.14, 8.16, 8.28a,
8.35 (e,f), 8.45, 17.14, 10.12, 10.13, 17.34c, 17.62
Problem Set #3: Solutions
Problem Set #4
10.8, 10.21 (a,b,d), 10.39, 11.45, 11.51, 11.58,
17.34 (a,b), 17.40, 17.55, 17.65
Problem Set #4: Solutions
Problem Set #5
8.7, 8.8, 8.9, 8.10, 8.27e, 8.28 (c,d), 17.6
8.14, 8.28b, 8.32c
Problem Set #5: Solutions
Problem Set #6
11.4, 11.12, 11.27, 11.31, 11.33, 11.41, 11.42,
11.45, 11.47, 11.57
Problem Set #6: Solutions
Problem Set #7
18.1, 18.5, 18.6, 18.23, 18.24, 18.25
Problem Set #7: Solutions
Problem Set #8
14.2, 14.3, 14.20, 14.21
Problem Set #8: Solutions
Problem Set #9
14.7, 14.22 (a, c, e), 14.23
Problem Set #9: Solutions
Problem Set #10
14.8, 14.9, 14.26, 14.27, 14.28, 14.32, 14.35, 17.51
Problem Set #10: Solutions
Problem Set #11
15.1, 15.2, 15.3, 15.18, 15.19, 15.20, 15.21
Problem Set #11: Solutions
Problem Set #12
15.5, 15.10, 15.11, 15.12, 15.25, 15.31, 15.35, 15.38,
15.42, 15.43, 15.44
Problem Set #12: Solutions
Problem Set #13
16.40, 16.64, 16.71, 16.73, 16.74, 17.52, 17.57
Problem Set #13: Solutions
Problem Set #14
16.1, 16.3, 16.5, 16.6, 16.7, 16.8, 16.9, 16.12, 16.14,
16.39, 16.43, 16.48 (a, c), 16.50, 16.52, 16.65
Problem Set #14: Solutions
Problem Set #15
16.16, 16.17, 16.61, 16.62, 16.63
Problem Set #15: Solutions
Problem Set # 16
16.18, 16.20, 16.47, 16.48 (a,c), 16.51, 16.58, 16.68, 16.69
Problem Set #16: Solutions
Problem Set #17
2, 3 (pg. 721), 17.7, 17.8, 17.31, 17.43
Problem Set #17: Solutions
Problem Set #18
19.9,19.10,19.20,
19.40 (b,c,d,e), 19.61, 19.75
Problem Set #18: Solutions
Problem Set #19
10.11, 10.34, 10.36, 22.1, 22.20, 22.22, 22.24, 22.34, 22.35, 22.46, 22.48, 22.58
Problem Set #19: Solutions
Problem Set #20
17.9, 17.10, 17.30, 17.32, 17.54, 19.34d, 19.36, 19.41, 5.23a, 5.24, 5.59
Problem Set #20: Solutions
Problem Set #21
21.18, 21.19, 21.35, 21.40, 21.41
Problem Set #21 Solutions
Problem Set #22
20.33, 20.36, 20.37, 20.52; 21.5, 21.39
Problem Set #22: Solutions
Problem Set #23
19.10, 19.22, 23.16, 23.17, 19.40
Problem Set #23: Solutions
Problem Set #24
23.1, 23.3, 23.5, 23.8, 23.10, 23.11, 23.14, 23.30, 23.35
Problem Set #24: Solutions


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