Electrochemistry

Question 1

Redox Reaction

Answer 1

reaction where oxidation and reduction occur

Question 2

Reduction

Answer 2

gaining of electrons

Question 3

Oxidation

Answer 3

loss of electrons

Question 4

Oxidizing Agent

Answer 4

takes electrons: the Reductant

Question 5

Reducing Agent

Answer 5

gives electrons: the Oxident

Question 6

Work

Answer 6

W, energy required to move an electric charge when there is a difference in potential

Question 7

Potential Difference

Answer 7

energy, in volts, needed to move 1C of pos charge from the neg point to the pos point

Question 8

Electric Potential

Answer 8

E, energy needed to bring 1C of positive charge to that point

Question 9

Standard Potential

Answer 9

E^0, potential for a reaction to reduce where all activities are in unity.

Question 10

Galvanic Cell

Answer 10

spontaneous reaction (electrons flow from neg to pos), generates electricity. Anode on left.

Question 11

Electrolytic Cell

Answer 11

non-spontaneous. energy must be added for reaction to proceed

Question 12

Salt Bridge

Answer 12

used to connect two half’s of a cell if one of the species could dissolve and all react on one end

Question 13

Standard Hydrogen Electrode

Answer 13

standard value of zero, voltage standard potentials are measured against

Question 14

Free Energy

Answer 14

delta-G, work done on the surroundings

Question 15

Spontaneous vs non-spontaneous

Answer 15

Cell is pos.

Cell is neg.

Question 16

Formal Potential

Answer 16

potential that applies under a certain set of conditions

-focus on pH 7