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To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 4.30 g sample of the shell to a fine powder and titrates it to the endpoint with 186. mL of 0.3300M hydrogen chloride (HC1) solution. The balanced chemical equation for the reaction is: 2HCl(aq) + · Co¯(aq) → H₂CO3(aq) + 2Cl¯ (aq) What kind of reaction is this? If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. O precipitation O acid-base O redox 0 1 0 9 X 2 00 0 x10

To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 4.30 g sample of the shell to a fine powder and titrates it to the endpoint with 186. mL of 0.3300M hydrogen chloride (HC1) solution. The balanced chemical equation for the reaction is: 2HCl(aq) + · Co¯(aq) → H₂CO3(aq) + 2Cl¯ (aq) What kind of reaction is this? If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. O precipitation O acid-base O redox 0 1 0 9 X 2 00 0 x10

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.118QP: An antacid tablet has calcium carbonate as the active ingredient; other ingredients include a starch...
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Calculate the mass percent of 

CaCO3

 in the sample. Be sure your answer has the correct number of significant digits.

To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 4.30 g sample of the shell to a fine powder and titrates it to the endpoint with 186. mL of 0.3300M hydrogen chloride (HC1) solution. The balanced chemical equation for the reaction is: 2HCl(aq) + · Co¯(aq) → H₂CO3(aq) + 2Cl¯ (aq) What kind of reaction is this? If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. O precipitation O acid-base O redox 0 0 0 4 X 2 00 0 x10
Transcribed Image Text:To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 4.30 g sample of the shell to a fine powder and titrates it to the endpoint with 186. mL of 0.3300M hydrogen chloride (HC1) solution. The balanced chemical equation for the reaction is: 2HCl(aq) + · Co¯(aq) → H₂CO3(aq) + 2Cl¯ (aq) What kind of reaction is this? If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. O precipitation O acid-base O redox 0 0 0 4 X 2 00 0 x10
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