Analytical ChemistryHard
Question
CoS (black) obtained in group IV of salt analysis is dissolved in aqua regia and is treated with an excess of NaHCO3 and then Br2 water. An apple green coloured stable complex is formed. It is :
Options
A.sodium cobaltocarbonate
B.sodium cobaltibromide
C.sodium cobalticarbonate
D.sodium cobaltobromide
More Analytical Chemistry Questions
Which of the following is not precipitated as sulphide by passing H2S in the presence of concentrated HCl ?...To a solution of a substance, gradual addition of ammonium hydroxide results in a brownish black precipitate which does ...Consider the following statements, S1 : Fe(OH)3 and Cr(OH)3 precipitates can be separated using NaOH + H2O2 but not by e...Which one of the following metal salts produces a blue coloured bead in cobalt nitrate charcoal cavity test ?...A metal nitrate solution reacts with dilute hydrochloric acid to give a white precipitate which is soluble in concentrat...