Question #c78ac

1 Answer
Jun 5, 2017

Answer:

There is no reaction.

Explanation:

I assume you mean:

#sf(2Au_((s))+Cu_((aq))^(2+)rarrCu_((s))+2Au_((aq))^+)#

Gold is a very unreactive metal so you would not expect it to displace copper from a solution of its salt.

This is born out by the #sf(E^@)# values:

#sf(Cu^(2+)+2erightleftharpoonsCu" "E^@=+0.34color(white)(x)V)#

#sf(Au^++erightleftharpoonsAu" "E^@=+1.83color(white)(x)V)#

These data indicate that the gold 1/2 cell will go left to right and the copper 1/2 cell will go right to left.

The spontaneous reaction will be:

#sf(Cu_((s))+2Au_((aq))^+rarrCu_((aq))^(2+)+2Au_((s)))#