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2H20 H3O* OH Exercise 21.1 Give what is asked for. 1. Write the equilibrium constant expression (K reaction).

2H20 H3O* OH Exercise 21.1 Give what is asked for. 1. Write the equilibrium constant expression (K reaction).

Chemistry
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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A hammer can be used to put and also remove nails, depending on the need. Similarly, amphiprotic substances can act both as an acid and as a base.! Water accepts a proton, and is acting Water loses a proton, and is acting as an acid. H3O+ H20 OH- as a base. How can this equation be related to the hammer previously discussed?" Water, like the hammer, can serve two purposes: as a proton donor and as proton acceptor. The auto-ionization of water molecules follows the reaction below: OH H20 H* "From the equation, what are the products of the auto-ionization of water?" "How to simplify this equation further?" The products of the ionization of water molecules include a hydrogen ion and a hydronium ion. The reaction can also be written as: 2H20 H3O* OH Exercise 21.1 Give what is asked for. 1. Write the equilibrium constant expression (K reaction). Tips: Recall the following points in writing equilibrium constant expression: a. Solutes enter as their molarity, []. b. Terms for pure liquids need not appear in the expression. Its concentration is the same for all dilutes. The equilibrium constant expression can be written as: K Experimentally, the hydronium ion and the hydroxide ion is present at almost exactly 0.0000001 molar at 25. "Why do yo'u think these two ions are present in equal amounts?" > They must be equal since ionization of water molecule produces equal number of
Transcribed Image Text:A hammer can be used to put and also remove nails, depending on the need. Similarly, amphiprotic substances can act both as an acid and as a base.! Water accepts a proton, and is acting Water loses a proton, and is acting as an acid. H3O+ H20 OH- as a base. How can this equation be related to the hammer previously discussed?" Water, like the hammer, can serve two purposes: as a proton donor and as proton acceptor. The auto-ionization of water molecules follows the reaction below: OH H20 H* "From the equation, what are the products of the auto-ionization of water?" "How to simplify this equation further?" The products of the ionization of water molecules include a hydrogen ion and a hydronium ion. The reaction can also be written as: 2H20 H3O* OH Exercise 21.1 Give what is asked for. 1. Write the equilibrium constant expression (K reaction). Tips: Recall the following points in writing equilibrium constant expression: a. Solutes enter as their molarity, []. b. Terms for pure liquids need not appear in the expression. Its concentration is the same for all dilutes. The equilibrium constant expression can be written as: K Experimentally, the hydronium ion and the hydroxide ion is present at almost exactly 0.0000001 molar at 25. "Why do yo'u think these two ions are present in equal amounts?" > They must be equal since ionization of water molecule produces equal number of
Lesson 21. Acid -Base Equilibria and Salt Equilibria: Bronsted Acids & Bases and Acid-Base Property of Water 21 INTRODUCTION: This lesson introduces you to the concept of acids and bases which have chemical equilibrium in solution. At chemical equilibrium, the products and reactants have reached a state of balance. Reactions may still be taking place within the sample, but the forward and reverse reactions are taking place at the same rate, so the concentrations of the products and reactants are not changing with time. Concepts related to acid base equilibrium include designing buffers and plotting pH curves. Additionally, determining the acid base equilibrium can help in predicting the products of a reaction and the relative concentration of the products, as well as aiding in the identification of the weaker acid and base. ffice OBJECTIVES/LEARNING COMPETENCIES Learning Competency: • Define Bronsted acids and bases. (STEM_GC11ABIVF-g-153) • Discuss the acid-base property of water. (STEM_GC11ABIVF-g-154) Specific Learning Outcomes: WPS At the end of the lesson, the learners will be able to: explain the acid-base property of water; write the equilibrium constant expression for the auto-ionization of water; and describe how Bronsted acids and bases act in a chemical reaction. EXPLORE Key Concepts How can a substance, like water, show its amphiprotic nature? What information can be derived from the auto-ionization of water? Water molecules exhibit their amphiprotic property even in trace amounts. Consider this example!
Transcribed Image Text:Lesson 21. Acid -Base Equilibria and Salt Equilibria: Bronsted Acids & Bases and Acid-Base Property of Water 21 INTRODUCTION: This lesson introduces you to the concept of acids and bases which have chemical equilibrium in solution. At chemical equilibrium, the products and reactants have reached a state of balance. Reactions may still be taking place within the sample, but the forward and reverse reactions are taking place at the same rate, so the concentrations of the products and reactants are not changing with time. Concepts related to acid base equilibrium include designing buffers and plotting pH curves. Additionally, determining the acid base equilibrium can help in predicting the products of a reaction and the relative concentration of the products, as well as aiding in the identification of the weaker acid and base. ffice OBJECTIVES/LEARNING COMPETENCIES Learning Competency: • Define Bronsted acids and bases. (STEM_GC11ABIVF-g-153) • Discuss the acid-base property of water. (STEM_GC11ABIVF-g-154) Specific Learning Outcomes: WPS At the end of the lesson, the learners will be able to: explain the acid-base property of water; write the equilibrium constant expression for the auto-ionization of water; and describe how Bronsted acids and bases act in a chemical reaction. EXPLORE Key Concepts How can a substance, like water, show its amphiprotic nature? What information can be derived from the auto-ionization of water? Water molecules exhibit their amphiprotic property even in trace amounts. Consider this example!
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