Phosphoric acid, H₃PO₄, is a triprotic acid, for which Kₐ₁ = 7.2 × 10⁻³, Kₐ₂ = 6.3 × 10⁻⁸, and Kₐ₃ = 4.2 × 10⁻¹³.What is the value of K for the following equation?\[ \text{HPO}_4^{2-} \text{ (aq)} + \text{H}_2\text{O (l)} \rightleftharpoons \text{H}_2\text{PO}_4^- \text{ (aq)} + \text{OH}^- \text{ (aq)} \]Express your answer in scientific notation rounded to three significant figures.

The reaction given is, => HPO42- (aq) + H2O (l) ↔ H2PO4- (aq) + OH- (aq)

Phosphoric acid, H3PO4, is a triprotic acid, for which Ka1 = 7.2 × 103, Ka2 = 6.3 x 10-8 and Ka3 = 4.2 x 10-13. What is the value of K for the following equation. HPO42 (aq) + H20(1) 2 H,PO4 (aq) + OH"(aq) Express your answer in scientific notation rounded to three significant figures.

Phosphoric acid, H3PO4, is a triprotic acid, for which Ka1 = 7.2 × 103, Ka2 = 6.3 x 10-8 and Ka3 = 4.2 x 10-13. What is the value of K for the following equation. HPO42 (aq) + H20(1) 2 H,PO4 (aq) + OH"(aq) Express your answer in scientific notation rounded to three significant figures.

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

Phosphoric acid, H₃PO₄, is a triprotic acid, for which Kₐ₁ = 7.2 × 10⁻³, Kₐ₂ = 6.3 × 10⁻⁸, and Kₐ₃ = 4.2 × 10⁻¹³.

What is the value of K for the following equation?

\[ \text{HPO}_4^{2-} \text{ (aq)} + \text{H}_2\text{O (l)} \rightleftharpoons \text{H}_2\text{PO}_4^- \text{ (aq)} + \text{OH}^- \text{ (aq)} \]

Express your answer in scientific notation rounded to three significant figures.

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