Question

Calcium chloride can be made by reacting calcium carbonate with hydrochlonc acid CaCO,(s) + 2HCl(aq) → Cači (aq) CaC1. H.O(1) + CO,(9) + An excess of calcium carbonate was added to 50.0 cm of 0.500 mol/dm hydrochlonc acid. The solution was filtered to remove the excess calcium carbonate. (a) How many moles of HCl were used in this reaction?


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Answer 1

Answer:

The mass of HCl is

1000

0.75×36.5×25=0.684g.

1 mole of calcium carbonate reacts with 2 moles of HCl.

Hence, the mass of calcium carbonate that will react completely with 0.684 g of HCl is

2×36.5

100 ×0.684=0.937g.

Explanation:

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