Exploring Electrolysis and Redox Reactions

What is the primary function of a voltaic cell?

• To store electric energy in batteries

• To increase the potential energy of electrons

• To use a spontaneous reaction to generate electric current

• To convert electric current into chemical energy

Where does oxidation occur in a voltaic cell?

• Outside the cell

• In the electrolyte

• At the cathode

• At the anode

What is the role of the copper electrode in a voltaic cell?

• It acts as a barrier to electron flow

• It gains electrons and gets reduced

• It loses electrons and gets oxidized

• It supplies the electrolyte solution

What is the standard cell potential of a voltaic cell if the reaction is spontaneous?

• 1.10 volts

• -1.10 volts

• 0 volts

• Depends on the temperature

What does an electrolytic cell require to operate?

• A battery or external voltage source

• A spontaneous redox reaction

• A cooling system

• A catalyst

In an electrolytic cell, what happens at the cathode?

• Electrolyte decomposition

• Electron repulsion

• Reduction of metal ions

• Oxidation of metal ions

How does the cell potential of an electrolytic cell compare to a voltaic cell?

• It is double the voltaic cell potential

• It is the same but with a positive sign

• It is zero

• It is the same but with a negative sign

What is the effect of reversing the reaction in an electrolytic cell compared to a voltaic cell?

• The reaction becomes spontaneous

• The electrodes switch roles

• The cell potential becomes negative

• The cell potential becomes positive

Which electrode is connected to the negative terminal of the battery in an electrolytic cell?

• The anode

• The cathode

• Neither electrode

• Both electrodes

How do the signs of the electrodes in a voltaic cell compare to those in an electrolytic cell?

• Only the cathode signs are the same

• Only the anode signs are the same

• They are the same

• They are opposite