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13 Terms
Adding aqueous sodium hydroxide to Ca2+
White ppt is seen. ppt is insoluble in excess sodium hydroxide.
Adding aqueous ammonia to CA2+
No observable change
Adding aqueous sodium hydroxide to Al3+
White ppt is seen. ppt dissolves in excess aqueous sodium hydroxide to give a colourless solution.
Adding aqueous ammonia to Al3+
White ppt is seen. ppt is insoluble in excess aqueous ammonia.
Adding aqueous sodium hydroxide to Zn2+
White ppt is seen. ppt dissolves in excess aqueous sodium hydroxide to give a colourless solution.
Adding aqueous ammonia to Zn2+
White ppt is seen. ppt dissolves in aqueous ammonia to give a colourless solution.
Adding aqueous sodium hydroxide to Cu2+
Blue ppt is seen. Blue ppt is insoluble in excess aqueous sodium hydroxide.
Adding aqueous ammonia to Cu2+
Blue ppt is seen. Blue ppt is soluble in excess aqueous sodium hydroxide and dissolves to form a dark blue solution.
Adding aqueous sodium hydroxide to Fe2+
Green ppt is seen. Green ppt is insoluble in excess aqueous sodium hydroxide.
Adding aqueous ammonia to Fe2+
Green ppt is seen. Green ppt is insoluble in excess aqueous ammonia.
Adding aqueous sodium hydroxide to Fe3+
Red-brown ppt is seen. Red-brown ppt is insoluble in excess aqueous sodium hydroxide.
Adding aqueous ammonia to Fe3+
Red-brown ppt is seen. Red-brown ppt is insoluble in excess aqueous ammonia.
Adding aqueous sodium hydroxide to NH4+
On warming, colourless, pungent gas is evolved which turns damp red litmus paper blue. Gas is ammonia.