why is copper (ii) nitrate blue? - is it the copper ions?and why is potassium chromate yellow?please link to a website if you can cuase i have to site a source
Copper(II) nitrate is the chemical compound with the formula Cu(NO3)2. Commonly referred to simply as copper nitrate, the anhydrous form is a blue, crystalline solid. Hydrated forms of copper nitrate, also blue, are commonly used in school laboratories to demonstrate chemical voltaic cell reactions.
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