A yellow solution of a salt yields a reddish brown precipitate with caustic soda solution.The precipitate does not dissolve in excess of the alkali. The reddish brown precipitate on strong heating leaves behind a red powder, insoluble in water but soluble in dilute HCI.
Write the equation of the reaction involved.

A yellow solution of a salt yields a reddish brown precipitate with caustic soda solution.The precipitate does not dissolve in excess of the alkali. The reddish brown precipitate on strong heating leaves behind a red powder, insoluble in water but soluble in dilute HCI. ldentify the metal of the salt.

Ammonium hydroxide will produce a reddish brown precipitate when added to a solution of :

A metal salt solution gives a yellow precipitate with silver nitrate.The precipitate dissolves in dilute nitric acid as well as in dilute ammonia solution.The solution contains :

Reddish brown (chocolate) precipitate is formed by mixing solutions containing:

What is the reaction of freshly precipitated aluminium hydroxide with caustic soda solution? Give equation.

A colourless solution of a salt yields a white precipitate with dropwise addition of caustic alkali, which however. dissolves in excess of the alkali. The salt is a (a) zinc salt, (b) aluminium salt, (c) either a zinc salt or an aluminium salt, (d) none of (a) or (b).

When a white crystalline compound X is heated with K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) a reddish brown gas A is evolved. On passing A into caustic soda solution, a yellow coloured solution of B is obtained. Neutralizing the solution B with acetic acid and on subsequent addition of lead acetate, a yellow precipitate C is obtained. When X is heated with NaOH solution, a colourless gas is evolved and on passing this gas into K_2HgI_4 solution, a reddish brown precipitate D is formed. Identify A, B, C, D and X. Write the equations of reactions involved.

When a white crystalline compound X is heated with K_2Cr_2O_7 and concentrated H_2SO_4 a reddish-brown gas A is evolved. On passing A into caustic soda solution, a yellow-coloured solution B is obtained neutralising the of lead acetate, a yellow precipitate C is obtained. When X is heated with NaOH solution a colourless gas is evolved and on passing this gas into K_2HgI_4 solution a reddish-brown precipitate D is formed. Identify A,B,C,D, and X. Write the equations of the reactions involved.

When a white crystalline compound X is heated with K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) a reddish brown gas A is evolved On passing A into saustic soda solution ,a yellow coloured solution of B with acetic B is obtained .Neutradiding the solution of B with acetic acid and on obtaijned when X of lead acetate with NaOH solution precipitate C is obtained when X is heated with NaOH solution a coloueless gas is evolved and on passing the gas into K_(2)HgI_(4) solution a reddish brown precipitate D is formed identify A,B,C and D and X write the equation of the reaction involved.

A metal salt solution gives raddish brown precipitate with ammonium hydroxide hydroxide and deep red solouration with ammonium thiocyanate reagent. The metal ion is :