When an orange coloured crystallccompound [A] was heated withcommon salt and concentrated sulphuricacid , an orange red colouredgas [B] wasevolved. The gas [B] on passingthrough NaOH solution gave a yellow solution [C] . Thesolutionon reactingwith an aqueous solution of lead acetate gave a yellow precipitate. The yellow solution [C] containsmainly

When an orange coloured crystallccompound [A] was heated withcommon sa

1.	When an orange coloured crystallccompound [A] was heated withcommon salt and concentrated sulphuricacid , an orange red colouredgas [B] wasevolved. The gas [B] on passingthrough NaOH solution gave a yellow solution [C] . Thesolutionon reactingwith an aqueous solution of lead acetate gave a yellow precipitate. The yellow solution [C] containsmainly
Answer» Sodium sulphate Sodium CHROMATE Sodium dichromate Potassium chromate. SOLUTION :(b) The yellow solution (C) contains sodium chromate `(Na_(2)CrO_(4))` which is formed on reacting chromyl chloride with sodium hydroxide (NAOH) solution `CrO_(2)Cl_(2)+4NaOH to underset("(yellow solution)")(Na_(2)CrO_(4))+2NaCl+2H_(2)O`