1.

The compound insoluble in acetic acid

Answer»

Calcium oxide
Calcium carbonate
Calcium oxalate
Calcium hydroxide

Solution :`CA^(2+)` is precipitated as calcium oxalate which is INSOLUBLE in water as well as in acetic acid.
`CAO, CaCO_(3) and Ca(OH)_(2)` are soluble in acetic acid.


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