Electrochemistry- Chem 2

The purpose of the salt bridge in an

electrochemical cell is to

• A) provide oxygen to facilitate oxidation at the anode.

• B) provide a source of ions to react at the anode and cathode.

• C) maintain electrical neutrality in the half-cells via migration of ions.

• D) provide a means for electrons to travel from the anode to the cathode.

The gain of electrons by an element is

called

• A) disproportionation.

• B) fractionation.

• C) oxidation.

• D) reduction.

Choose the INCORRECT statement.

• A) Oxidation is the loss if electrons.

• B) Reduction is the gain of electrons

• C) Electrons are transferred in oxidation-reduction reactions

• D) A strip of metal in a solution of ions of that metal is an electrode potential

Choose the INCORRECT statement.

• A) An electrode is often a strip of metal

• B) An electrochemical cell is a half cell.

• C) An electrode in a solution of its ions is a half cell.

• D) The electromotive force (emf) is the cell potential.

Choose the INCORRECT statement.

• A) SHE stands for Standard Helium Electrodes.

• B) E° is the standard electrode potential.

• C) The standard electrode potential is the reduction potential of a half cell.

• D) The standard cell potential is the potential difference between two half cells

The ions in a solution which conduct

electricity are known as

• A) colloids.

• B) electrons.

• C) electrolytes.

• D) particulates.

An electrolytic cell converts

• A) kinetic energy into potential energy.

• B) chemical energy into electrical energy

• C) electrical energy into chemical energy

• D) potential energy into chemical energy.

The reaction is non-spontaneous in

• A) galvanic cell.

• B) electrolytic cell.

• C) both Galvanic and Electrolytic cells

• D) neither galvanic and electrolytic cells.

Electrons supplied by an outside source

for

• A) galvanic cell.

• B) electrolytic cell.

• C) both Galvanic and Electrolytic cells.

• D) neither galvanic and electrolytic cells.

Choose the INCORRECT statement.

• A) An anode is where oxidation occurs

• B) A cathode is where reduction occurs

• C) A cell diagram is a symbolic way to show cell components.

• D) Half cells in a cell diagram are separated by a single vertical line.