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Chemistry · Oct / Nov 2022 · Paper 12 · Question 38

5070Carboxylic acids

Propanoic acid reacts with calcium carbonate. The products of this reaction are calcium propanoate, carbon dioxide and water. What is the equation for this reaction?

  1. A2C2H5COOH + Ca2CO3 → 2C2H5COOCa + CO2 + H2O
  2. B2C2H5COOH + CaCO3 → (C2H5COO)2Ca + CO2 + H2O
  3. C2C3H7COOH + Ca2CO3 → 2C3H7COOCa + CO2 + H2O
  4. D2C3H7COOH + CaCO3 → (C3H7COO)2Ca + CO2 + H2O

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Correct answer: B. 2C2H5COOH + CaCO3 → (C2H5COO)2Ca + CO2 + H2O

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