Question

Bauxite ore is made up of Al2O3 + SiO2 + TiO2 + Fe2O3. This ore is treated with conc. NaOH solution at 500 K and 35 bar pressure for few hours and filtered when hot. In the filtrate, the species present are

Solution

Correct option is

NaAl(OH)4 only

 

In bauxite ore, only Al2O3 reacts with conc. NaOH and forms sodium meta aluminate. This, further dissolves in water.  

     

         

SIMILAR QUESTIONS

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Q10

 

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