Question

Match the following:

Sodium hydroxide/Ammonium hydroxide solution is added to the solutions containing the ions mentioned in column 1. Match them to the colours of their precipitates in column 2.

	Column 1		Column 2
(a)	Pb2+	(i)	Blue ppt.
(b)	Fe2+	(ii)	Reddish brown ppt.
(c)	Zn2+	(iii)	Dirty green ppt.
(d)	Fe3+	(iv)	Gelatinous white ppt. insoluble in excess NaOH
(e)	Cu2+	(v)	White ppt. soluble in excess NH4OH

Answer 1

	Column 1		Column 2
(a)	Pb2+	(iv)	Gelatinous white ppt. insoluble in excess NaOH
(b)	Fe2+	(iii)	Dirty green ppt.
(c)	Zn2+	(v)	White ppt. soluble in excess NH4OH
(d)	Fe3+	(ii)	Reddish brown ppt.
(e)	Cu2+	(i)	Blue ppt.