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A 0.450 g sample of impure CaCO3 is dissolved in 50.0mL of 0.150M HCl. CaCO3 + 2HCl...

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Chemistry

A 0.450 g sample of impure CaCO3 is dissolved in50.0mL of 0.150M HCl.

CaCO3 + 2HCl ---> CaCl2 +H20 + CO2

the excess HCl is titrated by 7.45mL of 0.125M NaOH

Calculate the mass percentage of CaCo3 in the sample?

Answer & Explanation Solved by verified expert
4.3 Ratings (785 Votes)
Answer We are given mass of sample 0450 g volume of HCl 500 mL HCl 0150 M HCl Moles of HCl 0150 M 0050 L 00075    See Answer
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