Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

结果化铋只能溶于氢卤酸（除氢氟酸外）、稀酸与碱金卤化物的混合液中，不能溶于稀酸中。

It is studied further that the dissolubility of the bismuthous sulfide in the solutions of the non-oxidative strong acid through the experiment by means of chemical thermodynamics.

运用化基础理论和方法研究了化铋在无氧化性强酸和可溶性碱金卤化物溶液中的溶解性。