Chapter 14 and 15

Question 1

Use of electrical measurements on a chemical system for analytical purposes; also refers to use of electricity to drive a chemical reaction or use of a chemical reaction to produce electricity

Answer 1

Electrochemistry

Question 2

Quantity of electricity, measured in coulombs

Answer 2

Electric charge, q

Question 3

A stream of charged particles, such as electrons or ions, moving through an electrical conductor or space

Answer 3

Electric current

Question 4

One that produces electricity by means of a spontaneous chemical reaction

Answer 4

Galvanic cell

Question 5

States that the current, I, in a circuit is proportional to voltage, E, and inversely proportional to resistance, R: I = E/R

Answer 5

Ohm’s law

Question 6

The number of coulombs in a mole of elementary charges, approximately 9.6485 x 10^4 C/mol of charge

Answer 6

Faraday constant, F

Question 7

An analytical method in which an electric potential difference (a voltage) of a cell is measured

Answer 7

Potentiometry

Question 8

One that maintains a constant potential against which the potential or another half-cell may be measured

Answer 8

Reference electrode

Question 9

One that develops a potential whose magnitude depends on the activity of one or more species in contact with the electrode

Answer 9

Indicator electrode

Question 10

Relates the voltage of a cell, E, to the activities of reactants and products

Answer 10

Nerst equation

Question 11

A calomel electrode saturated with KCl. The electrode half-reaction is Hg2Cl2 + 2e- = 2Hg + 2Cl-

Answer 11

Saturated calomel electrode (S.C.E.)

Question 12

An electric potential that exists at the junction (interface) between two different electrolyte solutions or substances. It arises in solutions as a result of unequal rates of diffusion of different ions

Answer 12

Junction potential

Question 13

One whose potential is selectively dependent on the concentration of one particular ion in solution

Answer 13

Ion-selective electrode (I.S.E.)