Problem: Calcium propionate is sometimes added to bread to retard spoilage. This compound can be prepared by the reaction of calcium carbonate, CaCO3, with propionic acid, C2H5CO2H, which has properties similar to those of acetic acid. Write the balanced equation for the formation of calcium propionate.

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FREE Expert Solution

To balance the chemical reaction: same number of atoms on both sides


  • Reactants: CaCO, C2H5CO2H
    • CaCO3 → Ca2+ + CO32-
    • C2H5CO2H → H+ + C2H5CO2-
  • Double displacement: Ions swap
  • Products: 
    • calcium propionate Ca(C2H5CO2)2
    • carbonic acid  → H2CO (unstable, decomposes)
      • H2CO → CO2 + H2O


Complete reaction: CaCO3 + C2H5CO2H  → Ca(C2H5CO2)CO2 + H2O


Balancing the chemical reaction(add coefficients)


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Problem Details

Calcium propionate is sometimes added to bread to retard spoilage. This compound can be prepared by the reaction of calcium carbonate, CaCO3, with propionic acid, C2H5CO2H, which has properties similar to those of acetic acid. Write the balanced equation for the formation of calcium propionate.