electrochemistry quiz

In a redox reaction, the species that loses electrons

• is called the cathode

• is oxidized

• gains mass at the electrode

• decreases in oxidation number

What is the direction of electron flow.

• From Zn to Cu through the external circuit

• From Zn to Cu through salt bridge

• From Cu to Zn through the external circuit

• From Cu to Zn through salt bridge

Galvanic cells convert

• mechanical energy in to electrical energy

• potential energy in to electrical energy

• electrical energy in to chemical energy

• chemical energy in to electrical energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-3

What is oxidation?

• It is the gain of electrons.

• It is the loss of electrons.

• It is the creation of electrons.

• It is the destruction of electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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