11-03: Voltaic Cells

Which form of energy is converted to electrical energy in a voltaic cell?

• chemical

• mechanical

• nuclear

• thermal

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-3

Which energy conversion occurs in an operating voltaic cell?

• chemical energy to electrical energy

• chemical energy to nuclear energy

• electrical energy to chemical energy

• electrical energy to nuclear energy

In an operating voltaic cell, reduction occurs

• at the anode

• at the cathode

• in the salt bridge

• in the wire

Base your answer to the question on the diagram of the voltaic cell.

Based on the given equation, the balanced half-reaction that occurs in half-cell 1 is

• Pb(s) → Pb²⁺(aq) + 2e^-

• 2Ag(s) → 2Ag⁺(aq) + 2e^-

• Pb²⁺(aq) + 2e^- → Pb(s)

• 2Ag⁺(aq) + 2e^- → Ag(s)

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-7

When the switch is closed, which group of letters correctly represents the direction of electron flow?

• A) A → B → C → D

• B) A → F → E → D

• C) D → C → B → A

• D) D → F → E → A

Tags

NGSS.HS-PS2-5

Which statement correctly describes the direction of flow for the ions in this cell when the switch is closed?

• Ions move through the salt bridge from B to C, only.

• Ions move through the salt bridge from C to B, only.

• Ions move through the salt bridge in both directions.

• Ions do not move through the salt bridge in either direction.

Tags

NGSS.HS-PS2-5

Which statement identifies the part of the cell that conducts electrons and describes the direction of electron flow as the cell operates?

• Electrons flow through the salt bridge from the Ni(s) to the Zn(s).

• Electrons flow through the salt bridge from the Zn(s) to the Ni(s).

• Electrons flow through the wire from the Ni(s) to the Zn(s).

• Electrons flow through the wire from the Zn(s) to the Ni(s).

Tags

NGSS.HS-PS2-5

A student collects the materials and equipment below to construct a voltaic cell.

- two 250-mL beakers - wire and a switch - one strip of magnesium - one strip of copper - 125 mL of 0.20 M Mg(NO₃)₂(aq) - 125 mL of 0.20 M Cu(NO₃)₂(aq) Which additional item is required for the construction of the voltaic cell?

• an anode

• a battery

• a cathode

• a salt bridge

Tags

NGSS.HS-PS3-5

Which process occurs at the anode in an electrochemical cell?

• the loss of protons

• the loss of electrons

• the gain of protons

• the gain of electrons

Which statement is true about oxidation and reduction in an electrochemical cell?

• Both occur at the anode.

• Both occur at the cathode.

• Oxidation occurs at the anode and reduction occurs at the cathode.

• Oxidation occurs at the cathode and reduction occurs at the anode.