Chapter 21, Problem 71E

Silver is sometimes found in nature as large nuggets; more often it is found mixed with other metals and their ores. Cyanide ion is often used to extract the silver by the following reaction that occurs in basic solution:

$\text{Ag}\left(s\right)+{\text{CN}}^{-}\left(aq\right)+{\text{O}}_2\left(g\right)\stackrel{Basic}{\to }\text{Ag}{\left(\mathrm{CN}\right)}_2{}^{-}\left(aq\right)$

Balance this equation by using the half-reaction method.