Chemical Bonding Questions and Answers

Enumerate 4 trends and give an example for each for BDEs bond dissociation energies

6 108 Identify the major intermolecular forces between each of the followin atoms or molecules 6 9 a He b HBr c SnH4 d CH3 CH2 CH OH

37 38 39 0 1 48 2 points Which element could be represented by the diagram below O O O O Cr Si Fe Po

3 1 2 3 20 2 points In the molecule shown below atom X is most likely O A A X A I A titanium phosphorus sulfur carbon

8 For CO molecule r 1 128 x 100 m vibration frequency o 2169 52 x10 m M 28x10 kg mol geo 1 calculate the standard molar entropy at 298K and compare it with the entropy obtained calorimetry S calorimetric 193 4 J mol K

The maximum number of electrons the 7th energy level can hold is 2 7 49 98

26 2 points What is the name of the compound B H7 O Boroethane diboron heptahydride Diborane Diboron hexahydride

What would the bond angle be in the hypothetical molecule shown below A X B 120 109 5 180 90

Chemical bonding may involve any of these except the O attraction between ions of the same charge unequal sharing of a pair of electrons between two nonmetals Otransfer of an electron from one atom to another attraction between two ions of the opposite charge

Use the diagram to answer the question below O ionic WATER MOLECULE Which of these describes the intramolecular hydrogen oxygen bond in a water molecule Opolar covalent Ohydrogen bond Ononpolar covalent Intramolecular hydrogen bond

66 2 points In the molecule shown below atom X is most likely X B B Ochlorine O silicon O sulfur Ophosphorus Previous

50 51 52 5m 54 53 2 points What is the formula for iridium III perchlorate Ir3CIO4 IrCIO4 Ir CIO4 3 Ir CIO4 3 Previous

50 51 52 53 54 55 52 2 points Which of the following exhibits hydrogen bonding OH OH O2 PH3 OH CO Previous

34 35 36 37 44 2 points What is the name of the compound B H7 O Diboron hexahydride O diboron heptahydride Boroethane O Diborane Previous

The bonding in Cl2 is best described as Oa A single polar covalent bond Ob A double nonpolar covalent bond OC A double polar covalent bond O d A single nonpolar covalent bond Oe None of these

33 2 points What is the name of the compound Ag2S3 O Disilver trisulfide Arsenic sulfide O O Diarsenic trisulfide O Silver III sulfide Previous

Draw the Lewis structure for SiO2 and use your Lewis structure to fill in answer to the following questions Enter only a number for each nothing else Number of electrons shared between Si and each O Number of lone pairs on Si Number of lone pairs on each 0

Are the intermolecular forces in SiH F primarily hydrogen bonding permanent dipole or temporary dipole Temporary dipole Permanent dipole Hydrogen bonding Previous

Which of the following name ion combinations is correct Be sure to choose all correct answers a po4 phosphite b none are correct C CIO3 chlorite d NO nitrite De S032 sulfate

The correct formula of the compound made from calcium and bromine is Oa CaBr Ob None of these O c Ca Br3 O d Ca3Br2 Oe CaBr

Double and Triple Covalent Bonding Covalent Bond Bond between two non metals Double Covalent Bond Two non metals bonding together by sharing 2 unpaired electrons per atom Triple Covalent Bond Two non metals bonding together by sharing 3 unpaired electrons per atom Lewis Dot Diagram of the Final Compound Stick Diagram Atoms in the compound 02 2 Oxygen Atoms N 2 Nitrogen Atoms Examples CO2 1 Carbon Oxygen

ii with the higest boiling in each threesome 1 2 OH OR OH NH iii with the higest reactivitity of acid derativies in each threesome LC C a HC 8 0 C H H C E NH H C C Cl

structures for each element to draw the structural formula for phosphorus trichloride showing molecular geometry shape of t Undo Redo

Which of the following molecules experience dipole dipole forces O NO O CO O CH O BCI 3 O all of these

O H N PH3 NH3 4 O N H PH3 NH3 4 4 O H N NH3 PH3 ON PH NH3 H O NH3 PH3N H 4 Question 18 Les In Order of increasing boiling point N H NH3 PH3 Which choice correctly lists the intermolecular forces present in CH Br O London forces only O London forces and dipole dipole forces o London forces dipole dipole forces and hydrogen bonding o dipole dipole forces and hydrogen bonding

OCH4 O CH3CI OH S O NH3 O both H S and NH3 Question 4 When the equation Al2O3 s HCI aq AICI3 aq H O 1 is balanced with smallest the coefficient of H O is 02 03 04 eger coefficient

14 Explain the difference between a nonpolar covalent bond a polar covalent bond and an ionic bond

What type of bond will form between cesium and fluorine Ometallic bond O covalent bond ionic bond Ono bond

What is the correct formula for aluminum oxide O AIO 2 Al2O3 Al302 Al O

4 The hybridization and bond angles H N C H C C O C O in the molecule below are about and respectively HH O H N C C 0 H

What is the mass number of an isotope that contains 8 protons 9 neutrons and 10 electrons O 17 08 O 19 18

Which statement BEST describes two substances forming a covalent bond Two nonmetals combine because they equally share ionization energy OA metal and a nonmetal combine because they have opposite charges OTwo nonmetals combine because they share valence electrons OA metal and a nonmetal combine because they unequally share electrons

What is the charge formed when phosphorus P satisfies the octet rule O 3 5 3

Which formula represents hydrogen peroxide as shown in the following Lewis structure Hydrogen Peroxide H 0 0 H O H O2 H O4 O 2 HO

What is the name of the following compound 6 O sulfur oxide O sulfur dioxide O SO sulfur II oxide sulfur II dioxide

Which of the highlighted chemical bonds in the molecules below is longest Shortest In between Which highlighted bond requires the highest energy to break Lowest In between Answer these questions by completing the second and third columns in the table compound HH 11 H C C 0 H HH H C C 0 H HH H C C O H length of highlighted bond choose one choose one V choose one V energy of highlighted bond choose one v choose one choose one

Classify each molecule as polar or nonpolar Polar

3 Pick one example from the slide of dipole dipole forces a Draw the Lewis structure s for the molecule s that make up this example b How can you tell that the molecule s that make up this example are polar

relative strength and what does this tell you about the relative strength of their conjugate bases Essay 4 topic Explain in your own words what are London forces Why are London forces important How do we know that London forces exist

Chapter 8 Ch 1 What are the coefficients needed to properly balance the following Al H SO4 Al SO4 3 H a 4 1 2 2 c 2 3 1 3 b 2 3 2 3 d 4 6 2 6

How many of the following molecules have sp 3 hybridization on the central atom XeCl 4 CH 4 SF 4 C 2H 2 0 4

3 Draw the Lewis dot diagram for H S AND state the molecular geometry

Molecular Formula C5H120 how many unpaired electrons are present how many covalent bonds could this element make could this element participate in a double of a triple bond Why or why not

1 Draw a complete Lewis electron dot diagram for the C Cl molecule a Is the C Cl molecule polar

Be sure to answer all parts Label the conjugate acid base pairs in each equation a HI aq NH3 aq NH4 aq select b HCOOH H O 1 select select select select c HSO4 aq H O 1 select select 7 H O aq F select H SO4 aq select I aq select HCOO aq select OH aq

15 For capillary action which forces have to be dominant a dipole diploe forces b hydrogen bonding action forces 16 The force that causes the molecules on the surface of the liquid to form a layer stretched membrane is called b vapor P atm pressure 1 5 dispersion forces 1 0 c cohesive forces 0 5 0 a surface tension c viscosity D y 10 0 I 10 20 30 40 T C a 0 C c 40 C d adhesive I I 50 60 70 17 The normal boiling point of the substance with the phase diagram shown above is hydrogen bonding d capillary b 10 C 18 What is the predominant intermolecular force in CH4 a ionic bonding b d 70 C c dipole dipole attraction d

Be sure to answer all parts Consider the conversion of oxygen O to ozone 03 3 O g 2 O3 g a What is the theoretical yield of O3 in grams from 351 g of O g 03 b What is the percent yield if the reaction actually gives 137 g of O3

19 The phase diagram of a substance is given above This substance is at what state of matter at 50 C and 0 5 atm a solid b liquid c gas d supercritical fluid 20 To draw the Lewis Structures of CO2 there will be how many total available electrons 3 a 10 c 24 b 16 d none of these 21 Following molecular geometry of the following molecule is B B A B a Linear c Trigonal pyramidal a 2 22 What is the formal charge on nitrogen atom in the following molecule 3 Marks H O b Tetrahedral d Bent b 3

7 For a given arrangement of ions the lattice energy increases as ionic radius and as ionic charge a increase increase increase decrease c decrease increase decrease decrease a ionization potential 8 The ability of an atom in a molecule to attract bonded electrons to itself is called electron affinity c electronegativity energy a ionization potential electron affinity c electronegativity energy b 9 The energy change that occurs when an electron is added to a gaseous atom is called 10 The Lewis symbol of Li is a Lis d b Li b d lattice b lattice

18 What is the predominant intermolecular force in CH4 a ionic bonding b dispersion forces 19 hydrogen bonding 21 is 1 5 te 0 5 P atm 1 0 c dipole dipole attraction 0 10 0 The phase diagram of a substance is given above This substance is at what state of matter at 50 C and 0 5 atm a solid b liquid c gas d supercritical fluid 3 20 To draw the Lewis Structures of CO2 there will be how many total available electrons 10 a 10 c 24 y B B A B a Linear L 1 20 30 40 50 60 70 T C b 16 d none of these Following molecular geometry of the following molecule d b Tetrahedral