Electrochemistry

Electrons always flow from

• cathode to anode

• anode to cathode

Oxidation occurs at the

• anode

• cathode

Given their standard reduction potentials, which of the species is going to be oxidized?

Cu²⁺/Cu = 0.34V

Zn²⁺/Zn = -0.76V

• Cu

• Zn

• CuSO4

• ZnSO4

Tags

NGSS.HS-PS1-2

What reaction occurs at the anode?

Ag⁺/Ag = 0.80V

Ni²⁺/Ni = -0.25V

• Ag⁺ + e^- →Ag

• Ag → Ag⁺ + e^-

• Ni²⁺ + 2e^- → Ni

• Ni → Ni²⁺ + 2e^-

Tags

NGSS.HS-PS1-2

Calculate the cell potential of voltaic cell

• –1.51
• - 0.03
• +0.03
• +1.51

Voltaic cell is made by connecting two half-cells below. Which statement is correct?

• Mn is oxidized and voltage is 1.06 V
• Pb is oxidized and voltage is 1.06 V
• Mn is oxidized and voltage is 1.32 V
• Pb is oxidized and voltage is 1.32 V

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-5

Calculate the cell potential of voltaic cell

• + 0.01
• + 0.89
• + 1.77
• + 2.65

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-1

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7