Electrochemistry Questions

Balance the following ionic equations by ion-electron method and write the next equation

1. Cu + 2H+ Cu2+ + H2

2. Cu + 2Ag+ Cu2+ + 2Ag

3. Cu2+ + 2Cl Cu + Cl2

4. PbCl2 + Al AlCl3 + Pb

5. Cl2 (aq) + Br (aq) Br2(aq) + Cl (aq)

6. Fe (s) + Ag+(aq) Ag (s) + Fe2+ (aq)

7. Pb2+(aq) + Mg (s) Mg2+ (aq) + Pb (s)

8. Al (s) + Fe 2+ (aq) Al3+(aq) + Fe (s)

9. NO3(aq) + AsO3– 3(aq) NO(g) + AsO4– 3(aq)

10. Cu(s) + NO3(aq) Cu++(aq) + NO(g)

11. NO2(g) + H2(g) NH3(g) + H+  

12. Cr2O72−(aq) + NO2(aq) Cr3+(aq) + NO3(aq)

13. Cr +3(s) + ClO3( aq) CrO42−(aq) + Cl(aq)

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