Abstract:

The reaction of lead with nitric acid is very complicated. In inorganic chemistry textbooks and the related materials, the descriptions of the reaction between lead and nitric acid are not entirely identical, which will not be beneficial for students to master basic properties of lead in the study of inorganic chemistry. Aiming at this problem in inorganic chemistry teaching materials, through a lot of experiments, we studied the conditions of the reaction between lead and nitric acid, including the effects of nitric acid concentration, reaction temperature and reaction time, and investigated the solubility changes of lead nitrate in different concentrations of nitric acid. The reaction products of lead with concentrated nitric acid were characterized by infrared spectroscopy (IR) and X-ray powder diffraction (XRD). The essence that lead is easily soluble in dilute nitric acid and slightly soluble in concentrated nitric acid is clarified.

Key words: Lead, Concentrated nitric acid, Lead nitrate, Solubility, Influencing factors