4. A student was performing this experiment with an antacid tablet which contained CaCO3 but forgot to heat the antacid solution prior to starting the titration. As sodium hydroxide was added the student noticed the formation of an insoluble white precipitate. a. Identify the precipitate. (Hint: the precipitate was soluble under acidic conditions) b. Would the presence of this precipitate cause the students experimentally determined volume of NaOH, required for the back-titration, to be incorrectly high or incorrectly low? Briefly explain. c. Would the resulting calculated number of moles of HCI, neutralized by the antacid tablet, be incorrectly large or small? Briefly explain.

4. A student was performing this experiment with an antacid tablet which contained CaCO3 but forgot to heat the antacid solution prior to starting the titration. As sodium hydroxide was added the student noticed the formation of an insoluble white precipitate. a. Identify the precipitate. (Hint: the precipitate was soluble under acidic conditions) b. Would the presence of this precipitate cause the students experimentally determined volume of NaOH, required for the back-titration, to be incorrectly high or incorrectly low? Briefly explain. c. Would the resulting calculated number of moles of HCI, neutralized by the antacid tablet, be incorrectly large or small? Briefly explain.

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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Concept explainers

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

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4. A student was performing this experiment with an antacid tablet which contained CaCO3
but forgot to heat the antacid solution prior to starting the titration. As sodium
hydroxide was added the student noticed the formation of an insoluble white
precipitate.
a. Identify the precipitate. (Hint: the precipitate was soluble under acidic conditions)
b. Would the presence of this precipitate cause the students experimentally
determined volume of NaOH, required for the back-titration, to be incorrectly high
or incorrectly low? Briefly explain.
c. Would the resulting calculated number of moles of HCl, neutralized by the antacid
tablet, be incorrectly large or small? Briefly explain.

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