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he endpoint with 190. ml of 0.4000 Mhydrogen chloride (HCI) solution. balanced chemical equation for the reaction is: 2HCI(ag) + co; (aq) - H,Co,(aq) + 2C1 (ag) O precipitation O acid-base What kind of reaction is this? O redox 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 CaCO, in the sample. Be sure your answer has the correct number of significant digits. 0%

he endpoint with 190. ml of 0.4000 Mhydrogen chloride (HCI) solution. balanced chemical equation for the reaction is: 2HCI(ag) + co; (aq) - H,Co,(aq) + 2C1 (ag) O precipitation O acid-base What kind of reaction is this? O redox 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 CaCO, in the sample. Be sure your answer has the correct number of significant digits. 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 (CaCo,) in a seashell, an analytical chemist crushes a 4.800 g sample of the shell to a fine powder and titrates it to the endpoint with 190. ml. of 0.4000 Mhydrogen chloride (HCI) solution. The balanced chemical equation for the reaction is: 2HCI(ag) + Co, (aq) - H,CO,(aq) + 2C1 (ag) O precipitation What kind of reaction is this? O acid-base O redox 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 CaCO, in the sample. Be sure your answer has 0% the correct number of significant digits.
Transcribed Image Text:To measure the amount of calcium carbonate (CaCo,) in a seashell, an analytical chemist crushes a 4.800 g sample of the shell to a fine powder and titrates it to the endpoint with 190. ml. of 0.4000 Mhydrogen chloride (HCI) solution. The balanced chemical equation for the reaction is: 2HCI(ag) + Co, (aq) - H,CO,(aq) + 2C1 (ag) O precipitation What kind of reaction is this? O acid-base O redox 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 CaCO, in the sample. Be sure your answer has 0% the correct number of significant digits.
Expert Solution
Step 1

Given reaction is an acid-base reaction in which HCL acid and carbonate is a base because acid gives H+ and carbonate gain H+.

Mass percent=calculate×100÷total mass

Mass percent=95%

 

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