The chemical equation CaO + CaCl2 -> 2CaCl2

  1. This equation illustrates the chemical process between calcium oxide (CaO) and calcium chloride (CaCl2) to create 2 molecules of calcium chloride. However, this equation is incorrect as the reaction is not balanced. It should be corrected as follows:
    CaO + 2HCl -> CaCl2 + H2O
    In which, calcium oxide (CaO) reacts with hydrochloric acid (HCl) to produce calcium chloride (CaCl2) and water (H2O).

  2. Reaction conditions: This reaction requires the presence of hydrochloric acid and occurs at room temperature.

  3. Reaction process: Calcium oxide, when in contact with hydrochloric acid, will produce calcium chloride – a white solid and water.

  4. Observed phenomena: When the reaction occurs, the solid calcium oxide dissolves in the hydrochloric acid solution, generating heat and simultaneously producing calcium chloride and water. Calcium chloride forms white crystals in the solution.

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