Question

Which on adding to freshly precipitated aluminium hydroxide and shaking produces sol of aluminium hydroxide?

• A. insufficient quantity of conc $HCl$
• B. sufficient quantity of conc $HCl$
• C. insufficient quantity of very dil $HCl$
• D. sufficient quantity of very dil $HCl$

Answer 1

The correct option is C insufficient quantity of very dil $HCl$

On adding insufficient quantity of very dilute HCl solution to the freshly precipitated aluminium hydroxide, a sol of aluminium hydroxide is obtained.

When small amount of very dilute solution of HClHCl is added to freshly precipitated aluminium hydroxid (Al(OH)3,(Al(OH)3, a colloidal solution of Al(OH)3Al(OH)3 is obtained.