Limestone consists mainly of the mineral calcite, CaCO3.  The carbonate content of 0.5143 g of powdered limestone was measured by suspending the powder in water, adding 10.00 mL of 1.396 M HCl, and heating to dissolve the solid and expel the CO2: CaCO3(s)  +  2H+  ⟶⟶ Ca2+  +  CO2↑↑ +  H2O The excess acid requied 39.96 mL of 0.1004 M NaOH for complete titration: OH-   +   H+  ⟶⟶ H2O Find the weight percent of calcite in the limestone.

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Limestone consists mainly of the mineral calcite, CaCO3.  The carbonate content of 0.5143 g of powdered limestone was measured by suspending the powder in water, adding 10.00 mL of 1.396 M HCl, and heating to dissolve the solid and expel the CO2:

CaCO3(s)  +  2H+  ⟶⟶ Ca2+  +  CO2↑↑ +  H2O

The excess acid requied 39.96 mL of 0.1004 M NaOH for complete titration:

OH-   +   H+  ⟶⟶ H2O

Find the weight percent of calcite in the limestone.

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