13:42 Mar 9, 2016
Более полная цитата: ================= In the first part of this article, a qualitative test for cyanides with ninhydrin in cyanogenic food is proposed. Bitter seeds for cyanide extraction are easy to find and cheap: they can be bought in grocery stores or online. In the second part of this article, different reactions with copper(II) are proposed in order to investigate the complexation and redox equilibria of cyanide associated with showy color changings of the tested solutions. A spectrochemical series between water, cyanide, ammonia, and ninhydrin can be rationalized after the observation of these reaction with copper ions |