Sulphate of metal M does not form precipitate with dil HCI

Last updated: 7/4/2023

Sulphate of metal M does not form precipitate with dil HCI but it forms black ppt P when H S gas is passed in presence of dil HCI P is insoluble in ammonium polysulfide Sulphate of metal M on reaction with small amount of NH4OH give precipitates and this become a soluble deep blue solution Q when excess of NH3 is passed Solution Q on acidification with acetic acid and then adding potassium ferrocyanide solution gave a chocolate brown precipitate R Select the correct statement Metal M belong to 4 th period of modern periodic table Precipitate P is insoluble in nitric acid IUPAC name of Q is tetraamminecopper III sulphate IUPAC name of R is copper hexacyanoferrate III