Question #a594e

1 Answer
Mar 23, 2017

Answer:

#"K"_ 2"CO"_ (3(s)) -> "K"_ 2"O"_ ((s)) + "CO"_ (2(g))#

Explanation:

Potassium carbonate, #"K"_2"CO"_3#, will undergo thermal decomposition at temperatures that exceed #1000^@"C"# to produce potassium oxide, #"K"_2"O"#, and carbon dioxiede, #"CO"_2#.

The balanced chemical equation that describes this decomposition reaction looks like this

#"K"_ 2"CO"_ (3(s)) stackrel(color(white)(acolor(red)(Delta)aaa))(->) "K"_ 2"O"_ ((s)) + "CO"_ (2(g))# #uarr#

Notice that the chemical equation is balanced because you have #2# atoms of potassium, #1# atom of carbon, and #3# atoms of oxygen on both sides of the equation.