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14 July, 23:53

The reaction that occurred when the antacid mixed with the HCl resulted in an additional product (besides a salt and water). Did you see evidence of this product? Describe the experimental evidence you witnessed that supports the formation of the additional product.

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  1. 15 July, 00:04
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    If an antacid has sodium hydrogen carbonate/Calcium carbonate, it reacts with HCl as shown

    NaHCO₃ + HCl → NaCl + CO₂ + H₂O

    Antacid acid salt gas water

    CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O

    Antacid acid salt gas water

    The formation of gas CO₂ is shown by brisk effervescence when the antacid (sodium hydrogen carbonate/calcium carbonate) reacts with HCl (acid). So CO₂ is the additional product formed and its formation is supported by observation of brisk effervescence as HCl is added to the antacid.
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