Chapter 17 (Oxidation/Reduction)

Question 1

Oxidation

Answer 1

The loss of electrons Substance being oxidized is known as the reducing agent (because it starts off reduced)

Question 2

Reduction

Answer 2

The gain of electrons Substance being reduced is known as the oxidizing agent (because it stars off oxidized)

Question 3

Zn (arrow) Zn2+ + 2e-

Answer 3

Oxidation

Question 4

Cu2+ + 2e- (arrow) Cu

Answer 4

Reduction

Question 5

Catabolism is (oxidative/reductive)

Answer 5

oxidative

Question 6

Anabolism is (oxidation/reductive)

Answer 6

reductive

Question 7

Electrons can be transfered in four different ways

Answer 7

1. Directly as e- 2. As a H atom (1e-) (H+) 3. As a hydride atom (2e-) (H-) 4. Through direct combination with O2

Question 8

Many times in biological systems, the LOSE of an e- is associated with a lose of a ___ hence why the enzymes are called ___

Answer 8

Hydrogen Dehydrogenase’s

Question 9

Most reduced form

Answer 9

Methane (CH4)

Question 10

Most oxidized form

Answer 10

Carbon dioxide (CO2)

Question 11

NAD+ is a biological (oxidizing/reducing) agent

Answer 11

oxidizing (becomes reduced)

Question 12

When you turn a C-C into a C=C it involves using ___

Answer 12

FAD

Question 13

Reduction potentials measure a compounds affinity for ___

Answer 13

electrons

Question 14

The more (positive/negative) the standard reduction potential the more the compound wants electrons

Answer 14

positive = more wants electrons (wants to be reduced)

Question 15

Equation for Delta Eº´

Answer 15

Acceptor - Donor

Question 16

Equation for Delta Gº’

Answer 16

-nF(Delta Eº’)

Question 17

When Delta Eº’ is positive then Delta Gº’ is ___

Answer 17

negative (favorable)

Question 18

Equation for Delta E

Answer 18

Delta Eº - (RT/nF) x ln ([donor]/[acceptor])