Which of the following anion is present in salt A when dil. HCl is added to salt A and heated, carbon dioxide is evolved.

SO₃^2-

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S^2-

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CO₃^2-

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Cl^-

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Solution

The correct option is C
CO₃^2-

When metal carbonate or metal hydrogen carbonate reacts with dilute HCl, metallic chloride and water are formed along with carbon dioxide gas is evolved. So, salt A contains $C O_{3}^{2 -}$ ion.

$C a C O_{3} + 2 H C l \to C a C I_{2} + H_{2} O + C O_{2}$

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Similar questions

Q. When

B a C l_{2}

is added to an aqueous salt solution, a white precipitate is obtained. The anion among

C O_{3}^{2 -}, S O_{3}^{2 -}

and

S O_{4}^{2 -}

that was present in the solution can be:

Take a small quantity of salt X in a test tube and add dil. $H_{2} S O_{4}$ .The rotten egg smelling gas Y is evolved. The anion contains in the salt is:

Carbon dioxide gas evolves when HCl acid is added to:

Q. A mixture contains,

{C O}_{3}^{2 -}

{S O}_{3}^{2 -}

and

{S O}_{4}^{2 -}

.
If scheme given to identify above unknowns is true enter 1, if false enter 0.
Add dil.

H C l

, brisk reaction with pungent odour gas indicates

{S O}_{3}^{2 -}

(and also

{C O}_{3}^{2 -}

, pungent gas is

{S O}_{2}

). Add

K_{2} {C r}_{2} O_{7}

solution. If mixture turns green then

{S O}_{3}^{2 -}

is confirmed. Pass the evolved gas into lime water, if it turns milky,

{C O}_{3}^{2 -}

is confirmed.

Sulphur dioxide gas gets evolved when HCl acid is added to:

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Which of the following anion is present in salt A when dil. HCl is added to salt A and heated, carbon dioxide is evolved.

The correct option is C CO32- When metal carbonate or metal hydrogen carbonate reacts with dilute HCl, metallic chloride and water are formed along with carbon dioxide gas is evolved. So, salt A contains CO2−3 ion. CaCO3+2HCl→CaCI2+H2O+CO2

The correct option is C
CO₃^2-

When metal carbonate or metal hydrogen carbonate reacts with dilute HCl, metallic chloride and water are formed along with carbon dioxide gas is evolved. So, salt A contains $C O_{3}^{2 -}$ ion.

$C a C O_{3} + 2 H C l \to C a C I_{2} + H_{2} O + C O_{2}$