CHM 2046C Module-4ii Homework Packet Name: ____________________

Please complete the following homework packet before you actually attempt the pretest before or after class each day. This is homework, not the pretest. You attempt it before you take the exam. You grade it. This completed packet is due the day of the exam.

 

B._____ (05) Lewis Dot/Stick Structure via Octet Rule Steric#s 2-3-4 Sect 8.3/8.7Answer

E._____ (01) Polyatomic IonsTable 2.4 Page 85

L.____ (01) Bond Angles/Bond Lengths Steric#s 2-3-4 Section 9.2 Answers

N. ____(01) Geometry of Molecules- Steric#s 2-3-4 Section 9.1-9.2Answers

O. ____(01) Polarity of Molecules- Steri #s 2-3-4 Section 8.6, 9.3 Answers

P. ____†† (01) Hybrid Orbital Recognition Steric#s 2-3-4-Sect 9.5-6 Answers

______(10) Total

 

Module Four II: Part B Dot Structures of Molecules Review†† 05 points

Choose Two from each question. Use the simple octet rule (but you may use formal charge method for a more accurate drawing-Required in M4iii B1). Using a periodic chart/octetrule draw the electron dot/stick structures of the following molecules:

 

1.NH3†† CH4††† H2O2†††† H2O†† HCl†† H2†† O2†† N2

 

 

 

 

 

 

 

2.H2SO4 H2SO3H3PO4 H3PO3HClO4†† HClO3HClO2†† HClO

 

 

 

 

 

 

 

 

 

3.†††† HNO3†† H2CO3HNO2††††††††††††

 

 

 

 

 

 

 

4.††††† CO2††† HCN††† SiO2†† SO3††

 

 

 

 

5.†† HC2H3O2†††† H2C2O4††† ††††† HCHO2†††††† ††

carbon to carbon by single covalent bond

 

 

 

 

6.††††† C2H4††† C2H2†† ††C3H8††C2H6

†††††† †††††† bond carbons to carbon

 

 

 

 

 

 

 

7.††† CH2O†† †††††††††††CH3COCH3†† ††††

††††††††††††† carbon to carbons by single covalent bonds above

 

 

 

 

 

 

8. CH3OCH3††† †††††††††††††††††††††††††††††††††††CHONH2†††††††††††††††††††††††††††

†††††† oxygen separates †††††††††††††††††††††††††††††††††O & N both ††††††††††††††††††††††††††††††††

††††† ††the carbons††††† †††††† ††††††††††††††††††††††††††††††bond to C †††††††††††††††††††††††††††††††††

 

††††††††††††††††††††††††††††††† ††††††††††††††††††††††††††††

 

 

 

 

 

 

 

 

9. CH2NH2COOH†††††††††††††††††††††† CH3CHNH2COOH††††††††††

††††††† carbon to carbons by single covalent bonds-NH2 hooks to #2 carbon in both above

 

 

 

 

 

 

10.CH3COOCH2CH3†††††††††††††††††††††††††††††††††††††† CHOOCH3

††††††††††† carbon to carbons by single covalent bonds†† †††††††(-CH3 also hooks to an oxygen above)

†††††††††† (-CH2CH3 also hooks to an oxygen above)

 

 

 

 

 

 

 

 

 

 

Reading Reference: Sections 8.5 Octet Rule and 8.7 Formal Charge (page 374)

Reference: B.†† Dot Structures of Covalent Compounds Section 2.10, 6.6, 7.1, 7.5, 7.6

Answers: http://www.fccj.us/chm2045/SampleTest/45M4bAnswers.htm
††† Required List of Polyatomic Ions 0 Points

 

1

IA

IIA

 

 

 

 

H

 

 

 

 

 

IIIa

IVA

VA

VIA

VIIA

He

2

 

 

 

 

 

 

 

 

 

 

 

 

B

C*

N

Ne

3

 

 

 

 

 

 

 

 

 

 

 

 

 

Si

P

S

Cl

Ar

4

 

 

 

 

V

Cr

Mn

Fe

 

 

 

 

 

 

As

Se

Br

Kr

5

 

 

 

 

 

Mo

 

 

 

 

 

 

 

Sn

Sb

Te

I

Xe

6

 

 

 

 

 

W

 

 

 

 

 

 

 

Pb

 

 

 

Rn

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Acetate††††††††††† ___________

Ammonium†† ___________

Antimonate†† ___________

Antimonite††† †† ___________

Arsenate†††††† †† ___________

Arsenite††††††† †† ___________

Azide††††††††††††† †† ___________

Bicarbonate††††† ___________

Borate†††††††††††††† ___________

Bromate††††††† †††† ___________

Bromite†††††††† †††† ___________

Carbide†††††††††††† __________

Carbonate†††††††† __________

Carbonite††††††††† __________

Chlorate††††††††††† __________

Chlorite†††††††††††† __________

Chromate††††††††† __________

Cyanate†††††††††††† _________

Cyanide†††††††††††† _________

Dichromate†††††† __________

Dihydrogen††† Arsenate†† __________

Dinhydrogen Phophate†† __________

Dihydrogen†† Phosphite__________

Ferrate††††††††††††††††††††††††††††† ___________†††††††††††

Hydrogen carbonate††††††† ___________

Hydrogen arsenate††††††††† ___________

Hydrogen phosphate††††† ___________

Hydrogen phosphite†††††† __________

Hydrogen sulfate††††††††††† __________

Hydrogen sulfite†††††††††††† __________

Hydronium††††††††††††††††††††† __________

Hydroxide†††††††††††††††††††††† ___________

 

Hypobromite†††††††††††††††† __________

Hypochlorite†††††††††††††††† __________

Hypoiodite†††††††††††††††††††† __________

Hypophosphite ††††††††††††__________

Hyposulfite†††††††††††††††††† ___________

Periodate†††††††††††††††††††††† __________

Iodate†††††††††††††††††††††††††††† __________

Iodite††††††††††††††††††††††††††††† __________

Mercury (I)†††††††††††††††††††† __________

Manganate†† ††††††††††††††††††__________

Molybdate††††††††††††††††††††† _________

Nitrate†††††††††††††††††††††††††††† __________

Nitrite††††††††††††††††††††††††††††† __________

Oxalate†††††††††††††††††††††††††† __________

Perbromate††††††††††††††††††† __________

Perchlorate††††††††††††††††††† __________

Permanganate†††††††††††††† __________

Phosphate†††††††††††††††††††† __________

Phosphite††††††††††††††††††††† __________

Plumbate†††††††††††††††††††††† __________

Plumbite††††††††††††††††††††††† __________

Selenate†††† †††††††††††††††††††___________

Selenite†††††††††††††††††††††††† ___________

Silicate††††††††††††††††††††††††† ___________

Stannate†††††††††††††††††††††† ___________

Stannite††††††††††††††††††††††† ___________

Sulfate††††††††††††††††††††††††† ___________

Sulfite†††††††††††††††††††††††††† ___________

Tellurate†††††††††††††††††††††† ___________

Thiocyanate†††††††††††††††† ___________

Tungstate†††††††††††††††††††† ___________

Vanadate††††††††††††††††††††† ___________

 

 

 

Reference Online Homework: Polyatomic Ions-Section 2.12 Answers e†††††††††††††††††††††††††††††††††††††††††††††

http://www.northcampus.net/Nomenclature/PolyatomicIonFormula/ProgressivePolyatomicIonFormula.html

 

††††††††††† Required List of Polyatomic Ions

 

1

IA

IIA

 

 

 

 

H

 

 

 

 

 

IIIa

IVA

VA

VIA

VIIA

He

2

 

 

 

 

 

 

 

 

 

 

 

 

B

C*

N

Ne

3

 

 

 

 

 

 

 

 

 

 

 

 

 

Si

P

S

Cl

Ar

4

 

 

 

 

V

Cr

Mn

Fe

 

 

 

 

 

 

As

Se

Br

Kr

5

 

 

 

 

 

Mo

 

 

 

 

 

 

 

Sn

Sb

Te

I

Xe

6

 

 

 

 

 

W

 

 

 

 

 

 

 

Pb

 

 

 

Rn

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The following Polyatomic Ions should be in you chemistry vocabulary:

 

Acetate CH3COO

††††††††† or C2H3O2

Ammonium††††† NH4+

Antimonate††††† SbO43−

Antimonite†††††† SbO33−

Arsenate†††††††††† AsO43−

Arsenite†††††††††† AsO33−

Bicarbonate†††† HCO3

Borate††††††††††††† BO33−

Bromate†††††††††† BrO3

Bromite††††††††††† BrO2

Carbide†††††††††††† C22−

Carbonate†††††††† CO32−

Carbonite††††††††† CO22−

Chlorate††† †††††††††ClO3

Chlorite††††††††††††† ClO2

Chromate†††††††††† CrO42−

Cyanate††††††††††††† OCN

Cyanide††††††††††††† CN

Dichromate††††††† Cr2O72−

 

 

Dihydrogen

††††††† Arsenate†† ††††††††††††H2AsO4

Dinhydrogen

†††††† Phophate††† †††††††††††H2PO4

Dihydrogen

†††††† Phosphite†† †††††††††††H2PO3

Hydrogen carbonate†† HCO3

Hydrogen arsenate†† †††HAsO42−

Hydrogen phosphateHPO42−

Hydrogen phosphite††† HPO32−

Hydrogen sulfate††††††††† HSO4

Hydrogen sulfite†††††††††† HSO3

Hydronium††††††††††††††††††† H3O+

Hydroxide†††††††††††††††††††† OH

Hypobromite†††††††††††††††† BrO

Hypochlorite†††††††††††††††† ClO

Hypoiodite†††††††††††††††††††† IO

Hypophosphite†††††††††††† PO23−

Hyposulfite†††††††††††††††††† SO22−

 

Iodate††††††††††††††††† IO3

Iodite†††††††††††††††† ††IO2

Manganate†††††††MnO42-

Mercury (I)†††††††††† Hg22+

Nitrate††††††††††††††††† NO3

Nitrite†††††††††††††††††† NO2

Perbromate†††††††† BrO4

Perchlorate†††††††† ClO4

Periodate††††††††††† IO4

PermanganateMnO4

Phosphate†††††††† PO43−

Phosphite††† ††††††PO33−

Plumbate†††††††††† PbO32−

Selenate††††††† ††††SeO42−

Selenite†††††††† ††††SeO32−

Silicate†††††††††† †††SiO32−

Stanate††††††††††††† SnO32−

Sulfate††††††††††† †††SO42−

Sulfite†††††††††††† †††SO32−

Tungstate††††††† ††WO42−

Bonus 1 point Each: Using a current CRC Handbook of Chemistry/Physics find a polyatomic ion list in an inorganic compound that is not on the list below:

 

The Complete Polyatomic Ions List http://www.fccj.us/PolyatomicIons/CompletePolyatomicIonList.htm

 

Taylorís ĺ Rule: http://www.fccj.us/PolyatomicIons/Taylor34OxygenRuleHandout.htm

 

Taylorís Charge Rule: http://www.fccj.us/PolyatomicIons/TaylorChargeRuleHandout.htm

National Publication2YC3 Newsletter (2014 vol iii)

http://www.2yc3.org/Newsletters/2014/2014iii.pdf

Jespersenís Common Polyatomic Ions

 

chem7e_tab_02_04.jpg

 

CHM 2046C Progressive Polyatomic Ions Jespersen ††††††††††††††††††††††††††††††††††††††††††1 Point

†††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† Name:_____________________

Write the formula and the charge for the following polyatomic ions: Jespersen(Table 2.4 page 85)

†††††††

Name

Formula with charge

Name

Formula with charge

Ammonium

 

Sulfite

 

 

Mercury(I)

 

 

Hydrogen Sulfite

 

Hydronium

 

 

Sulfate

 

 

Cyanide

 

 

Hydrogen Sulfate

 

Nitrite

 

 

Thiocyanate

 

 

Nitrate

 

 

Thiosulfate

 

 

Hypochlorite

 

 

Chromate

 

 

Chlorite

 

 

Dichromate

 

 

Chlorate

 

 

Phosphate

 

 

Perchlorate

 

 

Monohydrogen Phosphate

 

Permanganate

 

Dihydrogen Phosphate

 

Acetate

 

 

Hydrogen Carbonate

 

Oxalate

 

 

Carbonate

 

 

 

Module Four II: Part L Bond Angles†††††††††† †††††††††††††††††††††††††1 point

What is the bond Angle in the following structures:

___1. †††___4.

___2.††††††††††††††††††††††††††††††††††††††† †††† ___5.

___3.††††††††††††††††††††††††††††††††††††††† †††† ___6.

 

___7. †††††___8. ____9.

 

 

___10. ††††††____11.

 

___12. ††___13. ___16.

††††††††††††††††††††††† ††††† ___14.

††††††††††††††††††††††† ††††† ___15.

 

___17.†††††††††††††††††† ___20.

††††††††††††††††††† ____18.†† _____19.

 

Bonus:

 

___21. ††___23.

___22.††††††††††††††††††††††††† †††††††† ___24.

 

Steric Numbers do not predict bond angles within rings of carbons

 

Reading Reference: Jespersen 7th Section 9.2;

Work End of Chapter Problems #9.83-9.84 page 461

 

 

 

 

 

Module Four II - Part N: Geometry of Molecules†††† ††††††††††††††††††††††1 point

Use the dot/stick structures on the Part L page to state the geometry of the molecules:

Steric # = 2, 3,or 4:

Bent††††† Linear††††† Trigonal PlanerPlaner††† Trigonal Pyramidal††††† Tetrahedral

Steric # = 5 or 6

Trigonal-bipyramidal††††† Square Planer†††† Seesaw††††† T-shaped††† Octahedral

 

 

_____________1.H2O

 

 

_____________2.CO2

 

 

_____________3.C2H4

 

 

_____________4.SO2

 

 

_____________5.SO3

 

 

_____________6.HCN

 

 

_____________7.CH4

 

 

_____________8.NH3

 

 

_____________9.CH2O

 

 

_____________10. C2H2

 

______________ 11. PF5

 

_____________12. SF6

 

.

Reading Reference: Jespersen 7th Section 9.1/9.2See Example 9.1 Page 409See Steps page 413; See Example 9.4 Page415
Practice Exercise 9.1 page 406; Practice Exercises 9.2/9.3 Page 409; Practice Exercises9.4-9.6 Page 415

Look at End of Chapter Exercises #9,1-#9,7 page 458; Wrk Review Problems #9.73-#9.82 page 460-1

 

Module Four II:Part O: Polarity of Molecules††††† 1 point

 

Draw the dot structure for the following compounds, then state whether the molecule is polar or nonpolar:

 

 

 

_____________1.H2O

 

 

_____________2.CO2

 

 

__________ _ _3.C2H4

 

 

_______ ______4.SO2

 

 

__________ ___5.SO3

 

 

________ _____6.HCN

 

 

_________ ____7.CH4

 

 

________ _____8.NH3

 

 

______________9.CH2O

 

 

______________10. C2H2

 

_______________ 11. PF5

 

______________12. SF6

 

.

Reading Reference: Section 8.6;Section 9.3

See Example 9.5 page 419Work Practice Exercises 9.7/9.8 Page 420

 

 

 

Module Four II - Part P: Hybrid Orbitals of Molecules††††† †††††††1 points

Use the dot/stick structures in the table to predict the hybrid orbitals that overlap to form the covalent bond:

 

_____________1.H2O†† the sigma bond

††††††† ††††††††††††††††††††††between eitherH-O

 

_____________2.CO2the sigma bond

††††††††††††††††††††††††††††† between either C=O

_____________2a.CO2††††† the pi bond

†††††††††††††††††††††††††††††† between either C=O

 

_____________3.††† C2H4†† the sigma bond

†††††††††††††††††††††††††††††† between the two carbons

_____________3a.C2H4†† the pi bond

†††††††††††††††††††††††††††††† between the two carbons

 

_____________4.††† SO2the sigma bond

†††††††††††††††††††††††††††††† between S=O

_____________4a.SO2 the pi bond

†††††††††††††††††††††††††††††† between S=O

____________4b.SO2the sigma bond

†††††††††††††††††††††††††††††† between S-O

 

____________ 5.††† SO3†† either sigma bond

†††††††††††††††††††††††††††††† between S-O

____________ 5a.SO3†† the sigma bond

††††††††††††††††††††††††††††† between S=O

____________ 5b.SO3†† the pi bond

††††††††††††††††††††††††††††† between S=O

 

____________6.††† HCNthe single (sigma)

††††††††††††††††††††††††††††† bond between H-C

____________6a.HCNthe sigma bond

†† †††††††††††††††††††††††††††between C=N

____________6b.HCNeither pi bond

††††††††††††††††††††††††††††† between C=N

 

____________7.CH4the sigma bond

††††††††††††††††††††††††††††† between any of the H-C

 

____________8.NH3the sigma bond

†††††††††† †††††††††††††††††††between any of the H-N

 

___________9.†† CH2Oeither sigma

††††††††††††††††††††††††††††† bond between the H-C

____________9a.CH2Othe sigmabond

††††††††††††††††††††††††††††† between the C=O

____________9b.CH2Othe pibond

††††††††††††††††††††††††††††between the C=O

 

___________ __10.†† C2H2†† the sigma bond

††††††††††††††††††††††††††††† between the C=C

_________ ____10a. C2H2†† either pi bond

††††††††††††††††††††††††††† between the C=C

_____________ 10b. C2H2the sigma

††††††††††††††††††bond between any of the H-C

 

 

.

 

 

What is difference between a Sigma (σ) and a pi (π) bond? What is a delta(Δ) Bond

 

 

Reading Reference Jespersen 7th : Section 9.5 and 9.6
Try Practice Exercise 9.11 and 9.12 page 427; Look at Example 9.6 page 428 and 9.7 page 430-431

Try Practice Exercise 9.14 and 9.15 Page 431Study Example 9.8Page 432 Do Practice Exercises 9.16 and 9.17 page 433, the 9.20 and 9.21 page 440