AP Chemistry, Voltaic Cells

The special word for the positively charged electrode is…

• the negative electrode

• the cathode

• the anode

• the positive electrode

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

In a voltaic cell, the anode is the electrode where...

• oxidation occurs

• reduction occurs

• electrons are gained

• no reaction occurs

Which of the following is true about the cathode in a voltaic cell?

• It is the site of oxidation

• It is the site of reduction

• It loses electrons

• It is positively charged

What is the purpose of the salt bridge in a voltaic cell?

• To allow the flow of electrons

• To maintain electrical neutrality

• To separate the anode and cathode

• To increase the cell voltage

In a voltaic cell, electrons flow from...

• cathode to anode

• anode to cathode

• salt bridge to anode

• cathode to salt bridge

Tags

NGSS.HS-PS2-5

Which of the following reactions occurs at the anode of a voltaic cell?

• @@ ext{Cu}^{2+} + 2 ext{e}^- ightarrow ext{Cu}@@

• @@ ext{Zn} ightarrow ext{Zn}^{2+} + 2 ext{e}^-@@

• @@ ext{Ag}^+ + ext{e}^- ightarrow ext{Ag}@@

• @@ ext{Fe}^{3+} + ext{e}^- ightarrow ext{Fe}^{2+}@@

What is the standard cell potential for a voltaic cell made of zinc and copper?

• 1.10 V

• 0.76 V

• 0.34 V

• 1.50 V

Tags

NGSS.HS-PS3-5

Which metal will act as the anode in a voltaic cell made of zinc and copper?

• Copper

• Zinc

• Both

• Neither

In a voltaic cell, the flow of electrons is from...

• higher to lower potential

• lower to higher potential

• cathode to anode

• salt bridge to cathode

What is the role of the electrolyte in a voltaic cell?

• To conduct electricity

• To provide electrons

• To act as a catalyst

• To separate the electrodes