Experiment 1 - Electrochemistry

Electrochemical processes are oxidation-reduction reactions (or redox reactions) in which

A. the energy released by a spontaneous reaction is converted to electricity

B. electric energy is used to cause a non-spontaneous reaction to occur.

• A only

• B only

• Either A or B

• Neither A nor B

True or False. In a non-spontaneous redox reaction, electrons flowdirectly from the reducing agent (substance that is oxidized) to the oxidizing agent (substance that is reduced) in solution.

• True

• False

True or False. A galvanic cell is an example of a spontaneous redox reaction.

• True

• False

A part of the galvanic cell where oxidation reaction takes place.

• Anode

• Cathode

• Salt Bridge

• Battery

A part of the galvanic cell where reduction reaction takes place.

• Anode

• Cathode

• Salt Bridge

• Battery

It is the part of a galvanic cellwhich allows either cations or anions to migrate into the solution to prevent imbalance of charge from building up as electrons leave the anode and move to the cathode.

• Anode

• Cathode

• Salt Bridge

• Alligator clips

It is an instrument that can be used to measure the electrical potential difference between the anode and cathode.

• Ammeter

• Voltmeter

• Ohmmeter

Where should the black (negative) electrode be?

• Anode

• Cathode

• Salt Bridge

• Battery

True or False. The salt bridge contains strong electrolyte whose ions will not react with other ions in solution or with the electrodes.

• True

• False

Where should the red (positive) electrode be?

• Anode

• Cathode

• Salt Bridge

• Battery