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is copper nitrate soluble in water?

The answer to this question depends on the particular nitrate compound. If the nitrate is a salt of a metallic element, such as potassium nitrate or zinc nitrate, then it will almost certainly be soluble in water. If the nitrate is derived from an organic compound, such as benzene or ethyl acetate, then it may not be soluble in water as easily as a metallic nitrate.

Nitrates are a class of compounds that include many different salts of the same cations. Often they will be more soluble in water than corresponding carbonates, sulfates or phosphates.

Silver nitrate is a common example of this class. It is soluble in water and is less sensitive to light than its silver halide relatives, making it a common precursor for other silver compounds.

Anhydrous Cu(NO3)2 is a blue, crystalline solid and is commonly used in school laboratories to demonstrate chemical voltaic cell reactions. It is also an oxidizer, producing a green to emerald coloration in flame tests when added to copper splints or magnesium nitrate.

Hydrated forms of copper nitrate, on the other hand, behave differently. They resemble crystals and have a much lower toxicity when exposed to the skin.

To prepare hydrated copper nitrate, add 3 – 5 mL of water to the powdered metal and stir until it dissolves completely. It should be completely colorless when it has fully dissolved, and you can decant the supernatant into the container labeled ‘aqueous waste’.