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Try this! 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

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 :

  • Option 1)

    CH3COONa

  • Option 2)

    Na2C2O4

  • Option 3)

    C6H5COONa

  • Option 4)

    HCOONa

 
Answers (1)
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As we learnt ,

@4590

Reactions involved :

Na2C2O4 + H2SO4  \rightarrow H2C2O4 + Na2SO4

Na2C2O4 + CaCl2 \rightarrow CaC2O4 + 2 NaCl

                                     white ppt.which decolourises acidic KMnO4


Option 1)

CH3COONa

Option 2)

Na2C2O4

Option 3)

C6H5COONa

Option 4)

HCOONa

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