Post a New Question

chemistry

posted by on .

an electrochemical cell uses Al and Al+3 in one compartment and Ag and Ag+ in the other

write a balanced equation for the rxn that will occur spontaneously in this cell



would that just be Al + Al+3 + 2e --> Ag + Ag+ ?

  • chemistry - ,

    Not quite.
    The half equations you want are as follows:
    Al ==> Al^+3 + 3e
    Ag^+ + e ==> Ag
    =================
    Multiply equation 1 by 1 and equation 2 by 3 (to make the electrons equal).
    Al ==> Al^+3 + 3e
    3Ag^+ + 3e ==> 3Ag
    ===================
    Now add them.
    Al + 3Ag^+ + 3e ==> Al^+3 + 3e + 3Ag
    Now cancel the electrons (since there are 3 on each side). That gives you the final equation.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question