Chem Exam 4

Question 1

2 Electron Domains

Answer 1

Linear, 180, sp

Question 2

3 Electron Domains

Answer 2

Trigonal Planar, 120, sp2

Question 3

4 Electron Domains

Answer 3

Tetrahedral, 109.5, sp3

Question 4

5 Electron Domains

Answer 4

Trigonal Bipyramidal, 120 & 90, sp3d

Question 5

6 Electron Domains

Answer 5

Octahedral, 90, sp3d2

Question 6

As the number of nonbonding pairs increases, the bond angle

Answer 6

decreases

Question 7

Linear Molecular Geo

Answer 7

Linear

Question 8

Trigonal Planar Molecular Geo

Answer 8

Trigonal Planar

Bent

Question 9

Tetrahedral Molecular Geo

Answer 9

Tetrahedral
Trigonal pyramidal
Bent

Question 10

Trigonal Bipyramidal

Answer 10

Trigonal Bipyramidal
Seesaw
T-Shaped
Linear

Question 11

Octahedral

Answer 11

Ocathedral
Square Pyramidal
Square Planar

Question 12

Electronegativity

Answer 12

Increases up and right

Question 13

Dipole moment

Answer 13

Polar

Question 14

How to find dipole moments

Answer 14

The moment moves towards more electronegative element, make sure they don’t cancel out

Question 15

Polarity Rules

Answer 15

Any molecule with 1 or 2 lone pairs on central atom is polar (EXCEPT OCTAHEDRAL) & any molecule with different bonds on the outside is polar

Question 16

The basis of the VSEPR model of molecular bonding is ________

Answer 16

Electron domains in the valance shell will arrange themselves to minimize repulsion

Question 17

Polar

Answer 17

Molecule will be polar even if all atoms are same IF LONE PAIRS PRESENT

Question 18

A typical double bond ________.

Answer 18

Is stronger and shorter than a single bond
Consists of one σ bond and one π bond
Imparts rigidity to a molecule
Consists of two shared electron pairs

Question 19

In a polyatomic molecule, “localized” bonding electrons are associated with ______

Answer 19

Two particular atoms

Question 20

A typical triple bond ________.

Answer 20

Consists of one o bond and 2 pi bonds

Question 21

The kinetic-molecular theory predicts that pressure rises as the temperature of a
gas increases because ________.

Answer 21

both the gas molecules collide more frequently with the wall and the gas molecules collide more energetically with the wall

Question 22

The vapor pressure of any substance at its normal boiling point is ____

Answer 22

1 atm

Question 23

760 mmh

Answer 23

1 atm

Question 24

On a phase diagram, the critical pressure is ________.

Answer 24

the pressure required to liquefy a gas at its critical temperature

Question 25

Ideal Gas Law

Answer 25

PV=nRT

Question 26

Name Equations

Answer 26

P1V1/n1T1 = P2V2/n2T2

Question 27

Gas Density

Answer 27

D=P*MM/RT

Question 28

What intermolecular forces has highest boiling point

Answer 28

Ionic Bonding > Ion-Dipole > Hydrogen Bonding > Dipol-Dipole > London Diperson