8. A chemist mixed 57.9 ml of 0.222 M HNO, with 45.7 ml of 0.345 M KOH. K, HNO, is 4.5 x 104. a. Determine the number of moles of HNO2. b. Determine the number of moles of KOH. c. Which substance is in excess?

8. A chemist mixed 57.9 ml of 0.222 M HNO, with 45.7 ml of 0.345 M KOH. K, HNO, is 4.5 x 104. a. Determine the number of moles of HNO2. b. Determine the number of moles of KOH. c. Which substance is in excess?

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.

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8. A chemist mixed 57.9 ml of 0.222 M HNO, with 45.7 ml of 0.345 M KOH. K, HNO, is 4.5 x 104.
a. Determine the number of moles of HNO2.
b. Determine the number of moles of KOH.
c. Which substance is in excess?
d. Determine the pH of the mixture.

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