Abstract The reaction solution of concentrated nitric acid and copper is grass green, there are various interpretations, the experiment is doubtful. Through a lot of experiments, results showed that it was mainly the nitrous acid produced by the reaction of NO2 and water, and then combined the copper ion to form the nitrite compound of copper, which made the solution green.
WANG Zhi-Gang. Essential Cause of Green Mixture Solution After Reaction of Concentrated Nitric Acid and Copper[J]. Chinese Journal of Chemical Education, 2020, 41(7): 82-85.
