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A salt of NaX → MgCl 2 white ppt. on boiling. Thus, anion X is:

Options

  1. AH C O 3 -
  2. BN O 3 -
  3. CC O 3 2 -
  4. DS O 4 2 -

Correct answer

A. H C O 3 -

Step-by-step solution

Sodium bicarbonate with magnesium chloride solution gives magnesium bicarbonate which is water soluble. On heating bicarbonate decomposes to carbonate, white ppt.

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