A metal compound a reacts with dilute hcl to produce effervescence

The gas thus formed is an effervescent carbon dioxide gas when calcium carbonate reacts with dilutes HCl. The CO 2 gas also acts as an extinguisher for fires. Hence, the burning candle is extinguished. The metal compound A, therefore, constitutes calcium carbonate. Hence, metal compound A is CaCO 3. The gas evolved is CO 2 The balanced equation of the reaction is: CaCO 3 + 2HCl ⇾ CaCl 2 + CO 2 + H 2O

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ii) Metal carbonate reacts with dil. HCl to give carbon dioxide and metal chloride. iii) In a question given that the calcium chloride salt obtained after the reaction that means given compound is calcium carbonate. Step 2: From step 1, we know that the Calcium carbonate is reacting with dil.HCl produces carbon dioxide and Calcium chloride salt. The balanced reaction equation for this reaction is: