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To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 2.400 g sample of the shell to a fine powder and titrates it to the endpoint with 194. mL of 0.220M hydrogen chloride (HCI) 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. Calculate the mass percent of CaCO3 in the sample. Be sure your answer has the correct number of significant digits. O precipitation O acid-base O redox 0 0 % X 00 0

To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 2.400 g sample of the shell to a fine powder and titrates it to the endpoint with 194. mL of 0.220M hydrogen chloride (HCI) 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. Calculate the mass percent of CaCO3 in the sample. Be sure your answer has the correct number of significant digits. O precipitation O acid-base O redox 0 0 % X 00 0

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 2.400 g sample of the shell to a fine powder and titrates it to the endpoint with 194. mL of 0.220 M hydrogen chloride (HCl) solution. The balanced chemical equation for the reaction is: 2HCl(aq) + CO3(aq) → H₂CO3(aq) What kind of reaction is this? + 2 CI (aq) 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. Calculate the mass percent of CaCO3 in the sample. Be sure your answer has the correct number of significant digits. O precipitation O acid-base O redox 0 1 0 0% 8 X x10
Transcribed Image Text:To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a 2.400 g sample of the shell to a fine powder and titrates it to the endpoint with 194. mL of 0.220 M hydrogen chloride (HCl) solution. The balanced chemical equation for the reaction is: 2HCl(aq) + CO3(aq) → H₂CO3(aq) What kind of reaction is this? + 2 CI (aq) 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. Calculate the mass percent of CaCO3 in the sample. Be sure your answer has the correct number of significant digits. O precipitation O acid-base O redox 0 1 0 0% 8 X x10
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