Answered: Write (i) molecular equations; (ii) net…

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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Question

Write (i) molecular equations; (ii) net ionic equations for the reactions occurring before and at the three equivalence points (Eq.P) on the plot (note the third equivalence point may be hard to see on the plot): (2)

Before and at 1^st Eq.P

(i) NaOH (aq) + H3PO4 (aq) -> NaH2PO4 (aq) + H20 (aq)

(ii) OH- + H⁺ = H2O

Before and at 2^nd Eq.P

(i) NaH2PO4 (aq) + OH (aq) -> Na2HPO4 (aq) + H2O (aq)

(ii)

Before and at 3^rd Eq.P

(i) Na2HPO4 (aq) + Na2HPO4 + NaOH -> Na3PO4 + H2O

(ii)

H3PO4 vs. NaOH (pH vs. Volume of Titrant added)
14
12
10
8
4
2
5
10
15
25
Titrant Volume Added (mL)
pH Level
20

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