Gravimetric analysis is a technique through which the amount of the ion being analyzed can be determined through the measurement of mass. Gravimetric analysis depend on comparing the masses of two compounds containing the ion to be analyzed. Here’s an example:
A 3.46 g sample of limestone(CaCO3 ) was dissolved in 0.1M (HCl) solution like this:
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CaCO3 (s) + 2HCl (aq) => Ca2+ (aq) + 2Cl – (aq) + CO2 (g) + H2O (l)
What is the mass (by percentage) of calcium in the original limestone sample?
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