Why does copper become blue in colour when dipped in silver nitrate solution?
Copper on being dipped in Silver Nitrate solution forms Copper Nitrate (it displaces Silver due to their position in the reactivity series). The Copper Nitrate formed is blue in colour in water(thus the solution turns blue from colourless).Now if you want to know why it is blue and not other other colour then then, the answer is that when light passes through the Copper Nitrate solution all the colours other than the blue colour gets abosrbed (the electrons absorb their energies). This leads to only blue colour reaching our eye and hence it looks to us as blue in colour.Hope it helped.
Why does copper added to silver nitrate turn blue?
Copper Nitrate forms blue crystals which dissolve in water. Transition metal salts often form colored crystals. Since the other reaction product is metallic silver precipitate, and everyone knows what silver looks like, the blue is from the copper nitrate by process of elimination. The original solution was not blue because silver nitrate is colorless/slight gray when in solution and Cu(s) is just copper metal.
How do I clean silver ring that turned copper-color?
I bought a silver ring with the "925" silver stamp on it. I have other sterling silver rings that I've had no problems with. This ring, however, started tarnishing a few days after I bought it. So I used the Connoisseurs silver polishing cloth to try to clean it, and instead it turned my entire ring a copper color. I tried cleaning it with baking soda and it did nothing. Help please! The jewelry store I bought it from is on the other side of the country and when I call to speak with them we have a hard time communicating due to their broken English. They just don't see why/how my ring tarnished because "they've sold hundreds or thousands of rings and haven't had this problem." Any other cleaning solutions I can try?
Why does copper turn green?
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.
What would happen when a copper wire is dipped in silver nitrate solution?
When a strip of copper metal( in the form of a wire) is released in the solution of silver nitrate, copper being a more reactive metal than silver displaces silver from its compound by forming copper nitrate with a shiny greyish white deposit of silver on the copper strip.2AgNO3 + Cu ——-> Cu (NO3)2 + AgWhereinAg- SilverAgNO3 - Silver NitrateCu - CopperCu(N03) - Copper Nitrate
When silver nitrate is mixed with water, and copper is placed in the solution, the water turns blue. Why does this happen?
An oxidation reduction reaction is occurring. The silver ions react with the copper metal according to the following reaction.Ag[math]^+[/math] + e- → Ag(s)Cu(s) → Cu[math]^{2+}[/math] + 2 e-Overall, the reaction is:2 Ag[math]^+[/math] + Cu(s) → Cu[math]^{2+}[/math] + 2 Ag(s)The solid silver forms on the surface of the copper and will make the copper look fuzzy and dull grey in color. The solution turns blue because the copper ions (Cu[math]^{2+}[/math]) are going into solution, and hydrated copper (II) solutions are blue.
How does copper retain its colour and shining after any chemical reaction?
Although copper is quite stable, it react with other chemicals. Copper is reddish brown in colour but its colour changes when it reacts with other chemicals and elements. For example:-Copper is slowly oxidized by the oxygen in the air then in damp condition it react to form green coloured basic copper carbonate.2Cu + O2 + CO2 + H2O → CuCo3.Cu(OH)2When copper is heated in oxygen, black coloured copper(II) oxide is formed.2Cu + O2 → 2CuOCopper react with Fluorine, Chlorine and Bromine to form white, brown and black coloured copper halides respectively.Cu + F2 → CuF2 (white)Cu + Cl2 → CuCl2 (brown)Cu + Br2 → CuBr2 (black)Copper react with nitric acid to form blue coloured copper nitrate.Cu + dil 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O
Reaction of 200mL AgNO3 (0.2 moles of silver nitrate in 1 Liter of solution) and 1g Cu?
e) Moles of solid copper used in reaction, using molar mass: 1 gram Cu @ 63.55 g/mol = 0.0157 moles Cu (f) Moles of solid silver produced in reaction , using molar mass: 3.395g Ag @ 107.87 g/mol = 0.317 moles of Ag Write the net ionic equation for the reaction between, using your mole values: 0.0157 Cu (s) & 0.317 Ag+ --> 0.0157 Cu+2 & 0.317 Ag (s) Convert to whole number ratio, by dividing by the smaller : 0.0157 moles Cu / 0.057 = 1 mole Cu 0.317 moles Ag+ / 0.157 = 2 moles Ag and rewrite the equation using the whole number ratio: 1 Cu (s) & 2 Ag+ --> 1 Cu+2 & 2 Ag (s) If the solids in the beaker appear dry but actually contain traces of water during your last weighing, how would this affect your results? the moles of silver would appear to be much larger than it should be How many grams of Mg would produce one gram of silver: 1 g Ag @ (1 mol Mg)(24.31 g/mol) / (2mol Ag)(107.87g/mol) = 0.1127 grams of Mg (but how many sigfigs are in the "1 gram of silver" if that's all there is you might consider rounding your answer off to 0.1 g Mg) Explain the source of the blue color of the solution after the reaction. the blue color in solution is due to a complex ion made between the Cu+2 (aq) & the water: [Cu(H2O)n]+2, showing that Cu+2 ions have been produced from the Cu metal (an oxidation)
Silver Nitrate on skin, how do I get it off?
Oh my! I'm so sorry to hear that. Yes, I've had a fair number of silver nitrate stains myself. Though not on the face! Ouch. The bad news: silver nitrate gets into the skin, and there the skin reacts with the silver, so it becomes silver oxide particles. So you actually have a silver oxide tattoo. Lots of other permanent pigments are metal oxides, too. It doesn't dissolve in anything but strong acids, and that will make your skin look and feel a LOT worse. Sorry, it can't be washed off like some organic inks. The good news is that it's only in the dead layers on top, not in the lower layers where it would be permanent, like a tattoo. But it does go pretty deep. Washing it off would be painful. You're going to be wearing it for a few days, but only a few days, until it wears off. Regular vigorous washing will help a little to speed the process.