Question

In: Chemistry

Write the net ionic equations that occur in the following cells: 1. Pb/Pb2+ // Ag+/Ag 2....

Write the net ionic equations that occur in the following cells:

1. Pb/Pb2+ // Ag+/Ag

2. Zn/Zn2+ // Pb2+/Pb

3. Al/Al3+ // Cd2+/Cd

Solutions

Expert Solution

1)

anode reaction: oxidation takes place

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

cathode reaction : reduction takes palce

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

--------------------------------------------------------------------------------

net ionic equation

Pb(s) +2Ag+ (aq) -------------------------> Pb+2 (aq) + 2Ag(s)

2)

anode reaction: oxidation takes place

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

cathode reaction : reduction takes palce

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

--------------------------------------------------------------------------------

net ionic equation

Zn (s) + Pb+2 (aq) -------------------------> Zn+2 (aq) + Pb(s)

3)

anode reaction: oxidation takes place

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

cathode reaction : reduction takes palce

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

--------------------------------------------------------------------------------

net ionic equation

2Al (s) +3 Cd+2 (aq) -------------------------> 2 Al+3 (aq) +3Cd (s)

queen_honey_blossom answered 4 months ago
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