Cell Notation and Net Ionic Equations

What is the purpose of using cell notation in chemistry?

• To represent electrochemical cells and their reactions in a concise and standardized format.

• To write poetry about chemical reactions

• To represent the phases of the moon

• To calculate the volume of a sphere

Tags

NGSS.HS-PS2-5

Explain the components of a cell notation.

• Proton, Neutron, Electron

• Mitochondria, Endoplasmic Reticulum, Golgi Apparatus

• Anode, Cathode, Phase Boundary

• Nucleus, Cytoplasm, Cell Membrane

Write the cell notation for a galvanic cell with a copper electrode and a zinc electrode.

• Cu(s) | Zn2+(aq) || Cu2+(aq) | Zn(s)

• Cu(s) | Cu2+(aq) || Zn2+(aq) | Zn(s)

• Zn(s) | Cu2+(aq) || Zn2+(aq) | Cu(s)

• Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s)

In a cell notation, what does '||' represent?

• A metal-metal interface

• A solid-liquid interface

• A gas-liquid interface

• A liquid-liquid interface or a salt bridge

What does the single vertical line '|' in a cell notation represent?

• Phase boundary

• Concentration gradient

• Temperature change

• Electrolyte concentration

Write the cell notation for a concentration cell with two silver electrodes in solutions of AgNO3 of different concentrations.

• Ag(s) | Ag+(aq, 1 M) || Ag+(aq, 0.1 M) | Ag(s)

• Ag(s) | Ag+(aq, 1 M) || Ag+(aq, 0.1 M) | Ag(s) | Ag(s)

• Ag(s) | Ag+(aq, 1 M) || Ag(s) | Ag+(aq, 0.1 M)

• Ag(s) | Ag+(aq, 0.1 M) || Ag+(aq, 1 M) | Ag(s)

Tags

NGSS.HS-PS1-5

How is the anode represented in a cell notation?

• In the middle of the vertical line

• On the right side of the vertical line

• At the top of the notation

• On the left side of the vertical line

What is the significance of using a double vertical line '||' in a cell notation?

• It indicates a chemical reaction is occurring

• It represents a phase boundary

• It denotes the presence of a catalyst

• It signifies the temperature of the cell

Explain the use of a salt bridge in a cell notation.

• Prevent the flow of ions between the two half-cells

• Maintain electrical neutrality and allow the flow of ions between the two half-cells.

• Increase the electrical neutrality of the cell

• Create a barrier between the two half-cells