why does copper turn green?

Question

when it reacts with silver nitrate

Answer 1

A single-replacement reaction occurs when one element reacts with a compound to replace one component of the compound. For metals, the metallic element will replace the metal ion present in the reactant compound.

*solid copper reacts with an aquated solution of silver nitrate

2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag

The solution begins to turn blue and the copper seems to disappear. Instead, a silvery-white material appears!!

When the copper and silver nitrate solution are mixed, solid silver is formed as each silver ion gains an electron from the metallic bond of solid copper. In the copper's metallic bond, there are two electrons for each copper atom. When the copper atoms lose their electrons, they become part of an aqueous solution in copper (II) nitrate; the nitrate ions are spectator ions in this experiment. When the copper from the metallic bond becomes ions in the aquated solution, the solution turns a light blue color. This color indicates the presence of the copper (II) ions. In the animation, the silver nitrate solution is the limiting reagent.

Answer 2

The reaction between metalic copper and silver nitrate results in the silver ionizing to form elemental silver, and copper ions bonding with the nitrate (NO3) to become crystalline Cu(NO3)2, or Copper (II) Nitrate. The crystals are dark blue, which may appear green when attached to the base metallic copper.

Answer 3

Is the color of Copper nitrate which is formed when during the reaction the silver is replaced by metallic copper.

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Answer 4

Because it undergoes single replacement forming copper nitrate which is green (It's actually more blue than green)

2AgNO3 + Cu --> Cu(NO3)2 + 2Ag

Answer 5

Copper is a highly reactive metal/element and a fresh surface when exposed to the atmosphere reacts with it and oxidises and carbonates. The green mixture is called the patina.

Answer 6

when copper gets oxidised it turns green (when made to react with an oxidising agent)
being oxidised means losing electrons
so copper becomes Cu 2+ from Cu

Answer 7

because of oxideison with air to make Cu O.It is a kind of metalic corrosion.2 Cu + O2 -------> 2 Cu O.CuSo4 is also green. AgNO3 reacts it to turn component.