part A Cd( s )+Sn2+( a q )Cd2+( a q )+Sn( s ) Write the anode half-reaction. Exp

Question

part A

Cd(s)+Sn2+(aq)Cd2+(aq)+Sn(s)
Write the anode half-reaction.

Express your answer as a ionic equation. Identify all of the phases in your answer.

Part B

Cd(s)+Sn2+(aq)Cd2+(aq)+Sn(s)
Write the cathode half-reaction.

Express your answer as a ionic equation. Identify all of the phases in your answer.

Part C

2Al(s)+3Cd2+(aq)2Al3+(aq)+3Cd(s)
Write the anode half-reaction.

Express your answer as a ionic equation. Identify all of the phases in your answer.

Part D

2Al(s)+3Cd2+(aq)2Al3+(aq)+3Cd(s)
Write the cathode half-reaction.

Express your answer as a ionic equation. Identify all of the phases in your answer.

Explanation / Answer

A)

Anode is OXidation so

Cd(s) ---> Cd+2(aq) + 2 e-

B)

cathode contains reductino so

Sn+2(aq) + 2e- --> Sn(s)

C)

anode is oxidation so

2Al(s) ---> 2Al+3(aq) + 6e-

TRY

Al(s) --> Al+3 + 3e-

D)

cathode is reduction so

3Cd+2(aq) + 6e- ---> 3Cd(s)

TRY

Cd+2(aq) + 2e --> Cd(s)

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