A 29.9 mL sample of 0.253 M dimethylamine, (CH3)2NH, is titrated with 0.292 M hydroiodic acid. (1) Before the addition of any hydroiodic acid, the pH is (2) After adding 11.5 mL of hydroiodic acid, the pH is (3) At the titration midpoint, the pH is

A 29.9 mL sample of 0.253 M dimethylamine, (CH3)2NH, is titrated with 0.292 M hydroiodic acid. (1) Before the addition of any hydroiodic acid, the pH is (2) After adding 11.5 mL of hydroiodic acid, the pH is (3) At the titration midpoint, the pH is

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

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

A 29.9 mL sample of 0.253 M dimethylamine, (CH3)2NH, is titrated with 0.292 M hydroiodic acid.
(1) Before the addition of any hydroiodic acid, the pH is
(2) After adding 11.5 mL of hydroiodic acid, the pH is
(3) At the titration midpoint, the pH is
(4) At the equivalence point, the pH is
(5) After adding 39.1 mL of hydroiodic acid, the pH is

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Step 2: pH before addition of hydroiodic acid.

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Step 3: pH after adding 11.5 mL HI

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Step 4: pH at the mid point

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