s-Block ElementsHard

Question

If NaOH is added to an aqueous solution of Al3+ ions, a white precipitate appears and on adding excess of NaOH, the precipitate dissolves. In the solution, aluminium exists in the :

Options

A.anionic part
B.cationic part
C.both in anionic and cationic part
D.colloidal form

Solution

Al3+ + 4OH- (from NaOH) →  [Al(OH)4]-
So aluminium exists in the anionic part.

Create a free account to view solution

View Solution Free
Topic: s-Block Elements·Practice all s-Block Elements questions

More s-Block Elements Questions

The set representing the correct order of first ionisation potential is :...K2O can be prepared by...Property of the alkaline earth metals that increases with their atomic number...Washing soda on heating :...In certain matters, lithium differs from other alkali metals, the main reason for this is :...