The ion that cannot be precipitated by both HCl and H2S is
Which one among the following pairs of ions cannot be separated by H2S in dilute hydrochloric acid? (1986 - 1 Mark)
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An aqueous solution contains Hg2+, Hg22+, Pb2+ and Cd2+.The addition of HCl (6N) will precipitate : (1995S)
Identify the correct order of solubility of Na2S, CuS and ZnS in aqueous medium (2002S)
An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which dissolves on heating. When hydrogen sulfide is passed through the hot acidic solution, a black precipitate is obtained. The substance is a (2002S)
A gas 'X' is passed th rough water to form a satur ated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas 'Y'. Identify 'X' and 'Y'. (2002S)
[X] + H2SO4 —→ [Y] a colourless gas with irritating smell, [Y] + K2Cr2O7 + H2SO4 —→ green solution. [X] and [Y] are:(2003S)
A solution which is 10-3 M each in Mn2+, Fe2+, Zn2+ and Hg2+ is treated with 10-16 M sulphide ion. If Ksp of MnS, FeS, ZnS and HgS are 10-15, 10-23, 10-20 and 10-54 respectively, which one will precipitate first? (2003S)
A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI is converted into orange colour solution. The cation of the metal nitrate is (2005S)
A solution when diluted with H2O and boiled, gives a white precipitate. On addition of excess NH4Cl/NH4OH, the volume of precipitate decreases leaving behind a white gelatinous precipitate. Identify the precipitate which disolves in NH4OH/NH4Cl (2006 - 3M, –1)
A solution of a metal ion when treated with KI gives a red precipitate which dissolves in excess KI to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitate. The metal ion is (2007)
Passing H2S gas into a mixture of Mn2+, Ni2+, Cu2+ and Hg2+ ions in an acidified aqueous solution precipitates (2011)
Upon treatment with ammoniacal H2S, the metalion that precipitates as a sulfide is (JEE Adv. 2013)
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347 docs|185 tests
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