When H2S gas is passed through the HCl containing aqueous solution of CuCl2,HgCl2, BiCl3 and CoCl2, , it does not precipitate out BiCl3 and CoCl2 HgCl2 it does not precipitate out When H2S gas is passed through the HCl containing aqueous solution of CuCl2 November 16, 2020 Category: AIIMS Last 24 Years Solved 1996 - [...]