# For the decomposition reaction 2Ag_2CO_3->4Ag+2CO_2+O_2, how many moles of reactant undergo decomposition in order to produce 6.0 moles of Ag?

Jan 15, 2016

$A {g}_{2} C {O}_{3} + \Delta \rightarrow A {g}_{2} O + C {O}_{2} \left(g\right) \uparrow$

#### Explanation:

The reaction above correctly represents thermal decomposition of a metal carbonate. The carbonate gives metal oxide and carbon dioxide under STRONG heating. You are not going to get silver metal unless you get it all into solution and add some reductant (maybe copper). Of course, you could do this in a forge, but it would be very difficult to smelt; and you'd still have to add a reductant.

Instead, we could make silver nitrate:

$A {g}_{2} O + 2 H N {O}_{3} \left(a q\right) \rightarrow 2 A g N {O}_{3} \left(a q\right) + {H}_{2} O \left(l\right)$

Silver nitrate would be relatively easy to reduce.

Jan 16, 2016