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How is the theory of complexes used to s...

How is the theory of complexes used to sperate `Fe_2O_3` and `Al_2O_3` ?

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`Al_2O_3` is separated from `Fe_2O_3` using aqueous caustic soda. `Al_2O_3` acts as acid to NaOH and forms a soluble complex. `Fe_2O_3` acts as a base and is insoluble, which is separated by filtration.
`Al_2O_3 + NaOH to Na[Al(OH)_4(H_2O)_2]`
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AAKASH SERIES-COMPLEX COMPOUNDS -PRACTICE EXERCISE
  1. How is the theory of complexes used to sperate Fe2O3 and Al2O3 ?

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  2. The primary and secondary valencies of the central metal ion in the co...

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  3. The complex compound which does not give precipitate with AgNO(3) solu...

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  4. the configuration of an element 'X' is 4s^1 3d^10. The wrong statement...

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  5. The primary valency of Iron in K(4)[Fe(CN)(6)] is satisfied by

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  6. Which of the following is wrong with respect to [Co(NH(3))(5)Cl]Cl(2)

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  7. A complex in which central atom carries zero oxidation state is

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  8. Oxidation number of metal in the complex [Co(NH(3))(4)Cl(2)]^(+) is

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  9. The correct match which is responsible for colour

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  10. Give the correct increasing order of electrical conductivity of aqueou...

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  11. Coordination number of Cr is 6. A complete entity with C(2)O(4)^(-2), ...

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  12. In Aqueous solution meta aluminate ion exists as

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  13. How many EDTA molecules are required to make an octahedral complex wit...

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  14. Which of the following is neutral molecular complex

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  15. The following complex representation violates IUPAC rule

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  16. Effective atomic number of central metal ion in [Co(NH3)6]Cl3 is

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  17. Complex in which effective atomic number is not equal to atomic number...

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  18. IUPAC name of K3[Al(C2O4)3]

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  19. The neutral complex, diamminedibromodichloroplatinum(IV) is best repre...

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  20. IUPAC name of [Fe(CN)(6)]^(4-) is

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  21. The correct match is

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