Voltaic cells

Which direction do the electrons flow in wire X and which metal is oxidized?

• A
• B
• C
• D

Tags

NGSS.HS-PS3-5

Which species is oxidized in the following reaction?

• Ag
• Ag⁺
• Cu
• Cu²⁺

Tags

NGSS.HS-PS1-2

What is the function of Y in cell below?

• To complete the circuit
• To allow flow of electrons between both cells
• To allow flow of ions 
• To connect both half cells

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Reduction happens at the (anode or cathode)

(a)  

Oxidation happens at the (anode or cathode)

(a)  

Tags

NGSS.HS-PS2-5

Reactions in voltaic cells are

• spontaneous, redox reactions
• non-spontaneous, redox reactions
• spontaneous, non-redox reactions
• non-spontaneous, non-redox reactions

This electrode in a voltaic cell gains mass (anode or cathode)

(a)  

This electrode loses mass (anode or cathode)

(a)  

In which direction does electricity flow in a voltaic cell (battery)?

• Electrons flow from the cathode to the anode
• Electrons flow from left to right
• Electrons flow from anode to cathode
• Electrons flow from right to left

Which changes could take place at positive electrode in a voltaic cell?

• I

• II

• III