verdigris is what it's called when copper turns green.
verdigris is what it's called when copper turns green.
what's it called when copper turns green?
verdigris
Na
Na
when dissolved in an approximately 35% nitric acid solution it is called schwerter's solution and is used to test for the presence of various metals, notably for determination of silver purity. pure silver will turn the solution bright red, sterling silver will turn it dark red, low grade coin silver (0.800 fine) will turn brown (largely due to the presence of copper which turns the solution brown) and even green for 0.500 silver.









































brass turns dark brown, copper turns brown, lead and tin both turn yellow while gold and palladium do not change.









































section::::uses.:analytical reagent.:sulfur dioxide test.
potassium dichromate