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Sodium salt of an organic acid 'X' produ...

Sodium salt of an organic acid 'X' produces effervescence with conc. `H_(2)SO_(4)`. 'X' reacts with the acidified aqueous `CaCl_(2)` solution to give a white precipitate which decolourises acidic solution of `KMnO_(4) 'X'` is

A

`HCOONa`

B

`CH_3COONa`

C

`Na_2C_2O_4`

D

`C_6H_5COONa`

Text Solution

Verified by Experts

The correct Answer is:
C
`Na_(2)C_(2)O_(4) + H_(2)SO_(4) rarr Na_(2)SO_(4) + H_(2)O + CO + CO_(2)`
`Na_(2)C_(2)O_(4) + CaCl_(2) rarr CaC_(2)O_(4) darr + 2NaCl`
`8H_(2)SO_(4) + 5CaC_(2)O_(4) + 2KMnO_(4) rarr`
`5CaSO_4 + K_2SO_4 + 2MnSO_4 + 8 H_2O + 10CO_2`
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