The d-And-f-Block Elements

The d-And-f-Block Elements

Question

Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X' is

  • C6H5COONa

  • HCOONa

  • Na2C2O4

  • CH3COONa

Answer

C.

Na2C2O4

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