This is when two elements in a reaction swap places, one replacing the other. When a copper wire is introduced into an aqueous silver nitrate solution, a single replacement reaction occurs. These appear like crystal fractals, and can later be removed, dried and collected. ![]() When copper wire is left in an aqueous solution of silver nitrate, precipitates of silver begin to accumulate along the wire. It forms when copper has been exposed to air for a long period of time, and provides protection against further corrosion. This green layer is actually a protective coating known as patina. While copper is known for its reddish colour, it is also recognised for its green pigment – think of the Statue of Liberty, for example. This is because its natural form is directly usable.Ĭopper has weak metallic bonds, which is why it is one of the more ductile metals. What is Copper?Ĭopper (Cu) is one of the only metals that doesn’t require extraction from an ore. Silver nitrate is also used as the forerunner in most silver compounds, including those used in photography. It is also less sensitive to light than its silver halide relatives, and is made by dissolving large amounts of silver in nitric acid.Įven though silver nitrate is poisonous if ingested, it has a variety of applications in medicine where it is used for its antiseptic properties. Silver nitrate is highly soluble in water and other solvents. Interestingly, it was previously known as lunar caustic by ancient alchemists who associated silver with the moon. Silver nitrate is a caustic chemical compound with the formula AgNO 3.
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