14.1.2 Cell Diagrams

• What is the purpose of a salt bridge in an electrochemical cell?

  Maintains electrical neutrality
• Voltaic cells generate electricity from spontaneous redox reactions.
• In a voltaic cell, reduction occurs at the cathode
• Arrange the steps in an electrolytic cell in the correct order.

  1️⃣ Electricity is applied to the cell

  2️⃣ Non-spontaneous redox reactions occur

  3️⃣ Oxidation occurs at the anode

  4️⃣ Reduction occurs at the cathode
• Electrolytic cells require an external power source.
• What type of energy conversion occurs in voltaic cells?

  Chemical to electrical
• Match the cell type with its characteristic:

  Voltaic Cells ↔️ Spontaneous reactions

  Electrolytic Cells ↔️ Non-spontaneous reactions

  External Power Source ↔️ Required for electrolytic cells
• In an electrolytic cell, the anode has a positive polarity
• Electrochemical cells use redox reactions to convert chemical energy into electrical energy.
• From which electrode do electrons flow in a voltaic cell?

  Anode to cathode
• Voltaic cells convert chemical energy into electrical energy.
• Match the energy conversion with the cell type:

  Chemical to Electrical ↔️ Voltaic Cells

  Electrical to Chemical ↔️ Electrolytic Cells
• Arrange the steps in a voltaic cell in the correct order.

  1️⃣ Spontaneous redox reactions occur

  2️⃣ Oxidation occurs at the anode

  3️⃣ Reduction occurs at the cathode

  4️⃣ Electrons flow from anode to cathode
• Electrons flow from the cathode to the anode in a voltaic cell.

  False
• In a voltaic cell, the anode has a negative polarity
• What is the role of electrodes in electrochemical cells?

  Redox reactions
• Match the electrode with its function:

  Anode ↔️ Oxidation

  Cathode ↔️ Reduction
• The salt bridge allows ions to flow between half-cells to maintain electrical neutrality.
• What is the standard electrode potential of the Standard Hydrogen Electrode (SHE)?

  0.0 V
• A positive standard electrode potential indicates a stronger tendency for reduction
• What process occurs at the cathode in an electrochemical cell?

  Reduction
• Oxidation involves the loss of electrons at the anode.
• What is an electrolyte in an electrochemical cell?

  Conducts charge between electrodes
• The salt bridge in an electrochemical cell allows ions to flow and maintains electrical neutrality
• What are electrodes in an electrochemical cell?

  Metallic conductors for redox reactions
• Oxidation occurs at the cathode in an electrochemical cell.

  False
• Reduction in an electrochemical cell occurs at the cathode
• What does the external circuit in an electrochemical cell do?

  Connects electrodes for electron flow
• A voltmeter in an electrochemical cell measures the voltage produced by the cell.
• Match the component of an electrochemical cell with its function:

  Anode ↔️ Oxidation occurs

  Cathode ↔️ Reduction occurs

  Electrolyte ↔️ Conducts ions

  Salt Bridge ↔️ Maintains electrical neutrality
• What is the standard electrode potential of the Standard Hydrogen Electrode (SHE)?

  $0.0 V$
• Positive standard electrode potentials indicate stronger oxidation tendencies than SHE.

  False
• Order the processes in an electrochemical cell based on electron movement:

  1️⃣ Oxidation at the anode

  2️⃣ Electron flow through external circuit

  3️⃣ Reduction at the cathode
• What is the format for writing a cell diagram?

  $Anode | Anode solution || Cathode solution | Cathode$
• In a cell diagram, the symbol `|` represents a phase boundary
• What does the symbol `||` represent in a cell diagram?

  Salt bridge
• Cell diagrams show the physical arrangement of electrochemical cells.

  False
• Match the component in a cell diagram with its representation in an actual setup:

  Electrodes ↔️ Metals immersed in solutions

  Solutions ↔️ Solutions in beakers

  Salt Bridge ↔️ Physical bridge connecting solutions
• What is the cell diagram for the copper-zinc electrochemical cell?

  Zn(s) | Zn^{2 + }(aq) || Cu^{2 + }(aq) | Cu(s)</latex>
• In a cell diagram, the anode (oxidation site) is written on the left