Question

Question #c78ac

Answer 1

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)))`