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Standard XII

Chemistry

Preparations and Uses of Sodium Carbonate

A colourless ...

Question

A colourless solid (X) on heating evolved $C O_{2}$ and also gave a white residue, soluble in water. Residue also gave $C O_{2}$ when treated with dilute acid. (X) is :

N a_{2} C O_{3}

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C a C O_{3}

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C a (H C O_{3})_{2}

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N a H C O_{3}

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Solution

The correct option is D $N a H C O_{3}$
$N a_{2} C O_{3} Δ \to n o C O_{2}$ thermally stable.
$N a_{2} C O_{3}$ is water soluble.

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Similar questions

Q. A colourless solid

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C O_{2}

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C O_{2}

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{C O}_{2}

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A colourless solid (X) on heating evolved CO2 and also gave a white residue, soluble in water. Residue also gave CO2 when treated with dilute acid. (X) is :

The correct option is D NaHCO3 Na2CO3Δ→noCO2 thermally stable.Na2CO3 is water soluble.

A colourless solid (X) on heating evolved $C O_{2}$ and also gave a white residue, soluble in water. Residue also gave $C O_{2}$ when treated with dilute acid. (X) is :

The correct option is D $N a H C O_{3}$
$N a_{2} C O_{3} Δ \to n o C O_{2}$ thermally stable.
$N a_{2} C O_{3}$ is water soluble.