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Identify a chemical reagent used to distinguish CaCl2 from CaCO3. What is the distinguishing observation?

Identify a chemical reagent used to distinguish CaCl2 from CaCO3. What is the distinguishing observation?
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Identify a chemical reagent used to distinguish CaCl2 from CaCO3. What is the distinguishing observation?

User Mike Buckbee
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The chemical that may be used to distinguished the given compounds, CaCl2 and CaCO3, is AgNO3. By reacting silver nitrate to CaCl2, a precipitate AgCl is formed. Moreover, if AgNO3 is allowed to react with CaCO3, the gas CO2 is formed. 
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