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NEET levelSingle correct optionDifficulty 1 of 3qc004

Group V cations ( $Ba X^{2 +}$ , $Sr X^{2 +}$ , $Ca X^{2 +}$ ) are precipitated as carbonates using

Adilute $HCl$
B $Na X_{2} HPO X_{4}$ solution
C $(NH X_{4}) X_{2} CO X_{3}$ in presence of $NH X_{4} Cl$ and $NH X_{4} OH$
D $H X_{2} S$ in presence of dilute $HCl$

Answer: C

The group reagent of group V is ammonium carbonate in the presence of

NH X_{4} Cl

and

NH X_{4} OH

, giving white

BaCO X_{3}

,

SrCO X_{3}

and

CaCO X_{3}

.

Na X_{2} HPO X_{4}

is used for

Mg X^{2 +}

(group VI).

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