Actividad balanceo redox

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1. Determine the balanced chemical equation for the following reaction using half-reactions .  The reaction is aqueous solution.

Al + Cu2+  → Al3+  + Cu

Atoms oxidized:         Cu                                Atoms reduced :                Al3+        

Oxidizing agent                                         Reducing agent                                 

Al                                                Cu2+

1. Determine the balanced chemical equation for the following reaction using half-reactions. The reaction is in an acidic solution.

MnO2(s) + I–(aq) → Mn2+(aq) + I2(s)

Atoms oxidized :        I2                                   Atoms reduced: Mn2+                                  

Oxidizing agent :        MnO2                                Reducing agent : I-                                    

1. Classify the following reactions as redox or non redox

a. HCl(aq)  +  KOH(aq)  →  KCl(aq)  + H2O(l)                Answer :        non redox                        

b. HCHO2  +  H2O  →  CHO2-  +  H3O+                        Answer :        Redox                

c. NaOH  +  KNO3  →  NaNO3  +  KOH                        Answer         Non redox                        

d. Zn(s)  +  Sn2+(aq)  →  Zn2+(aq)  +  Sn(s)                        Answer         redox                        

e. (NH4)2SO4  +  CaCl2  →  2NH4Cl  +  CaSO4                Answer         non redox                        

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