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26 May, 12:25

You carefully weigh out 20.00 g of CaCO3 powder and add it to 81.00 g of HCl solution. You notice bubbles as a reaction takes place. You then weigh the resulting solution and find that it has a mass of 92.80 g. The relevant equation is:

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  1. 26 May, 13:17
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    The relevant equation is:

    CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

    Explanation:

    1 mol of calcium carbonate can react to 2 moles of Hydrochloric acid to produce 1 mol of water, 1 mol of calcium chloride and 1 mol of carbon dioxide.

    The formed CO₂ is the reason why you noticed bubbles as the reaction took place
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