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How does Daltons atomic theory account for the law of constant composition

Introductory Chemistry: A Foundation | 7th Edition | ISBN: 9781439049402 | Authors: Steven S. Zumdahl, Donald J. DeCoste ISBN: 9781439049402 426

Solution for problem 8 Chapter 4

Introductory Chemistry: A Foundation | 7th Edition

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Introductory Chemistry: A Foundation | 7th Edition | ISBN: 9781439049402 | Authors: Steven S. Zumdahl, Donald J. DeCoste

Introductory Chemistry: A Foundation | 7th Edition

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Problem 8

How does Daltons atomic theory account for the law of constant composition?

Step-by-Step Solution:
Step 1 of 3

Buffers • Def: is a solution of a weak acid (HA) and its conjugate base (A-) o Equal amount of both solutes • Adding acid o Reacts with the conjugate base § CH3COO- + H3O+ > CH3COOH + H2O • Adding base o Reacts with the weak acid § CH3COOH + OH- > CH3COO- + H2O pH of a Buffer • weak acid + H2O <> H3O+ + conjugate base o Ka = [H3O+][conjugate base]/[weak acid] • -log(Ka) = -log([H3O+]) - log([conjugate base]/[weak acid]) o pKa = pH – log([base]/[acid]) • increased base > increased pH • scenario with increase of OH- ions o initial: [Ha] = [A-] o after OH- is added: [HA] < [A-] • scenario with increase o

Step 2 of 3

Chapter 4, Problem 8 is Solved
Step 3 of 3

Textbook: Introductory Chemistry: A Foundation
Edition: 7
Author: Steven S. Zumdahl, Donald J. DeCoste
ISBN: 9781439049402

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How does Daltons atomic theory account for the law of constant composition