The chemical equation for the reaction where Copper(II) hydroxide (Cu(OH)2) decomposes to form Copper(II) oxide (CuO), and further decomposes to form Copper (Cu) is as follows:

2Cu(OH)2 → 2CuO + H2O

2CuO → 2Cu + O2

So, initially, Copper(II) hydroxide decomposes to form Copper(II) oxide, and then Copper(II) oxide decomposes further to form Copper.