Metal compound $^{'} A^{'}$ reacts with dilute sulphuric acid to produce a gas which extinguishes a burning candle. Identify the compound $^{'} A^{'}$ and the gas produced.Write a balanced chemical equation for the reaction if one of the compounds formed in the reaction is sodium sulphate.

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Solution

When sodium carbonate reacts with sulphuric acid, it produces carbon dioxide gas with effervescence.

Carbon dioxide is used as fire extinguisher.
Hence, it extinguishes a burning candle.
Therefore, the metal compound A is sodium carbonate.

$N a_{2} C O_{3} + H_{2} S O_{4} \to N a_{2} S O_{4} + C O_{2} + H_{2} O$

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Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

Q. A compound

X

on heating with excess conc. sulphuric acid at

443 K

gives an unsaturated compound

Y

X

also reacts with sodium metal to evolve a colourless gas

Z

. Identify

X, Y

and

Z

. Write the equation of the chemical reaction of formation of

Y

and also write the role of sulphuric acid in the reaction

Q. A compound

X

on heating with excess conc. sulphuric acid at

443 K

given a saturated compound

Y

X

also reacts with sodium metal to evolve a colourless gas

Z

. Identify

X, Y

and

Z

. Write the equation of the chemical reaction of formation of

Y

and also write the role of sulphuric acid in the reaction.

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Metal compound ′A′ reacts with dilute sulphuric acid to produce a gas which extinguishes a burning candle. Identify the compound ′A′ and the gas produced.Write a balanced chemical equation for the reaction if one of the compounds formed in the reaction is sodium sulphate.

When sodium carbonate reacts with sulphuric acid, it produces carbon dioxide gas with effervescence.Carbon dioxide is used as fire extinguisher.Hence, it extinguishes a burning candle.Therefore, the metal compound A is sodium carbonate.Na2CO3+H2SO4→Na2SO4+CO2+H2O

Metal compound $^{'} A^{'}$ reacts with dilute sulphuric acid to produce a gas which extinguishes a burning candle. Identify the compound $^{'} A^{'}$ and the gas produced.Write a balanced chemical equation for the reaction if one of the compounds formed in the reaction is sodium sulphate.