Copper(II) nitrate
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Molecular formula: Cu(NO3)2
A blue, crystalline solid at STP. Commonly used in school laboratories to demonstrate chemical voltaic cell reactions. Is soluble in water.
Physical Properties
Appeareance: Blue Crystals
Odor: odorless
Boiling Point: 170°C
Melting Point: 115°C
Stable oxidant, harmful by inhalation. Exposure to dust can irritate nose, throat and eyes.
Commonly referred to as copper nitrate, the roman numeral sign is to specify the ionic makeup of the element, in this case a +2 charge.
This +2 charge combines with the Nitrate's -1 charge times two (because there are two nitrate ions), to produce a stable compound.