what is the formula for hydrate copper(II) CHLOride Tetra-hydrate?
CuCl2.4H2O
The formula for hydrated copper(II) chloride tetrahydrate can be determined by understanding the nature of hydrates and the chemical formula of copper(II) chloride.
First, let's understand what a hydrate is. A hydrate is a compound that contains a specific number of water molecules (H2O) within its structure. The water molecules become chemically bound to the compound, and they can be removed by heating, resulting in an anhydrous compound.
Now, let's look at the chemical formula of copper(II) chloride. The ionic form of copper(II) chloride consists of the copper cation (Cu2+) and two chloride anions (Cl-), which give us the formula CuCl2.
Next, we need to determine the number of water molecules attached to this compound. In the case of copper(II) chloride tetrahydrate, the prefix "tetra" indicates that there are four water molecules associated with each copper(II) chloride molecule.
To represent this, we use the dot notation. Each water molecule is written as H2O, and we multiply this by the number of water molecules, which in this case is four. Thus, the formula for hydrated copper(II) chloride tetrahydrate is CuCl2 · 4H2O.
To summarize, the formula for hydrated copper(II) chloride tetrahydrate is CuCl2 · 4H2O.