1140 Exam 3

Question 1

Does a precipitate form if Q is less than K?

Answer 1

No

Question 2

If Q is larger than K…

Answer 2

a precipitate forms

Question 3

Which one of these is more soluble in HCl? Calcium carbonate or calcium sulfate?

Answer 3

Calcium carbonate

Question 4

When a salt contains the conjugate base of a strong acid, the solubility ________ in acidic solution.

Answer 4

decreases

Question 5

Complex ions form from what two substances

Answer 5

metal cation and lewis base

Question 6

Complex ion formation _______ the solubility of a salt

Answer 6

increase

Question 7

first law of thermodynamics

Answer 7

delta U = q + w

Question 8

State function

Answer 8

Does not depend on path taken, just final - initial

Question 9

Second law of thermodynamics

Answer 9

Entropy of a system always increases for spontaneous processes

Question 10

Negative delta G means a process is

Answer 10

spontaneous

Question 11

Third law of thermodynamics

Answer 11

A substance that is perfectly crystalline at 0 degrees K has a entropy of 0

Question 12

Gibbs free energy equation

Answer 12

delta G = delta H - T(K) x delta S

Question 13

Signs of H and S when process is spontaneous at all Temps

Answer 13

-H, +S

Question 14

Signs of H and S when process is nonspontaneous at all temps

Answer 14

+H, -S

Question 15

delta G and K equation

Answer 15

delta G = -RTln(k)