Homework: A 1.2gm sample of a mixture of (Na₂CO3 + NaHCO3) is dissolved and titrated with 0.5N HCl. With phenolphthalein, the endpoint is at 15ml while after further addition of methyl orange a second endpoint is at 22ml. Calculate the percentage composition of the mixture.

Homework: A 1.2gm sample of a mixture of (Na₂CO3 + NaHCO3) is dissolved and titrated with 0.5N HCl. With phenolphthalein, the endpoint is at 15ml while after further addition of methyl orange a second endpoint is at 22ml. Calculate the percentage composition of the mixture.

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

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

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Homework: A 1.2gm sample of a mixture of (Na₂CO3+ NaHCO3) is dissolved
and titrated with 0.5N HCl. With phenolphthalein, the endpoint is at 15ml while
after further addition of methyl orange a second endpoint is at 22ml. Calculate the
percentage composition of the mixture.
Homework: What mass of Ca(OH)2 is present in a sample if it is titrated to its
equivalence point with 44.02 mL of 0.0885 M HNO3? The balanced chemical
equation is as follows:
2HNO3 + Ca(OH)2 → Ca(NO3)2 + 2H₂O

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