Solid cupric chlorate decomposes with heat to give cupric chloride and oxygen gas.

Question

Express your answer as a chemical equation. Identify all of the phases in your answer.

Answer 1

Cu(ClO3)2 >>>> CuCl2 + 3O2 You add the correct phases.

Answer 2

Cu(ClO3)2(s) ==>CuCl2(s) + 3O2(g) + heat

Answer 3

oops.
Cu(ClO3)2(s) + heat ==>CuCl2(s) + 3O2(g)