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14 October, 11:06

What mass of calcium carbonate (in grams) can be dissolved by 4.0 g of hcl? (hint: begin by writing a balanced equation for the reaction between hydrochloric acid and calcium carbonate.) ?

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  1. 14 October, 11:09
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    The reaction between calcium carbonate and hydrochloric acid can be expressed through the chemical reaction,

    CaCO3 + 2HCl - - > CaCl2 + H2O + CO2

    The molecular weight of calcium carbonate is 100 g/mol while that of hydrochloric acid is 36.45. The equation above depicts that 100 g of calcium carbonate can be dissolved in 72.9 g of hydrochloric acid.

    x = (4 g HCl) (100 g CaCO3 / 72.9 HCl)

    x = 5.49 g

    Answer: 5.49 g
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