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Question

Find the number of ions which are identified by dil HCl from the following:

(I) $C O_{3}^{2 -}$
(II) $S O_{3}^{2 -}$
(III) $S O_{4}^{2 -}$

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Solution

Answer is 2.
$S O_{3}^{2 -}$ are identified by $d i l . H C l$

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