Test 1 SG

Question 1

What is the greatest determinant of molecular interactions?

Answer 1

Water!

Question 2

Polar, Non-Polar, and Ionic are what in water inetearctions?

Answer 2

Polar Hydrophilic
Non-polar Hydrophobic
Ionic Hydrophilic

Question 3

How does water dissolve substances?

Answer 3

Through opposite charge interactions (dipole-dipole, ion-dipole)

Question 4

What is the hierarchy of intermolecular forces?

Answer 4

Dispersion (nonpolar) -> Dipole-dipole -> Ion-dipole -> H-bonding

Question 5

How do you determine bonds in polarity?

Answer 5

Polar = N-H, H-F, or O-H present = H-bond
Not present = dipole-dipole
Non-polar=dispersion forces

Question 6

What is the phase hierarchy affecting about intermolecular forces?

Answer 6

Solid>Liquid>Gas

Question 7

Does size matter in I.M. forces?

Answer 7

Larger molecules have a higher boiling point.

Question 8

What is an amphipathic molecule?

Answer 8

Contains both hydrophobic and hydrophilic parts

Question 9

What is an Acid? A base?

Answer 9

H+ donor and H+ receiver

Question 10

What is the Hendersen Hasselback equation

Answer 10

pH = PkA + log (A-/HA)

Question 11

When concentrations are equal, what does this indicate?

Answer 11

PH=PKA

Question 12

If Pka > PH, what does this mean?

Answer 12

Weak acid or A- prevails

Question 13

IF pka < ph, what does this indicate?

Answer 13

Conjugate base of HA prevails