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Metals

A metal compo...

Question

A metal compound 'x' react with dilute hcl to produce efferesence the gas evolved extinguish burning candle . if the one of the compounds formed is a calcium chloride . then identify 'x' and the gas evolved . also write balanced chemical equation.

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Solution

The compound X must be CaCO₃ which on reaction with HCL produces, Carbon dioxide gas in the form of effervescence which extinguishes candle flame as:
CaCO₃ + 2HCl --> CaCl₂ + H₂O + CO₂

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