Ch.15 - Acid and Base EquilibriumWorksheetSee all chapters
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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Consider the ionization constants hypochlorous acid (HOCl):  Ka = 3.5 × 10−8 ; ammonia (NH3) : Kb = 1.8×10−5 . A solution of ammonium hypochlorite (NH 4OCl) is 1. neutral, because the cation and the anion in the salt hydrolyze to the same extent. 2. acidic, because the cation in the salt hydrolyzes to a greater extent than the anion in the salt. 3. neutral, because NH4OCl is a weak base/weak acid salt. 4. basic, because the anion in the salt hydrolyzes to a greater extent than the cation in the salt. 5. acidic, because the anion in the salt hydrolyzes to a greater extent than the cation in the salt. 6. basic, because the cation in the salt hydrolyzes to a greater extent than the anion in the salt.

Problem

Consider the ionization constants hypochlorous acid (HOCl):  Ka = 3.5 × 10−8 ; ammonia (NH3) : K= 1.8×10−5 . A solution of ammonium hypochlorite (NH 4OCl) is

1. neutral, because the cation and the anion in the salt hydrolyze to the same extent.

2. acidic, because the cation in the salt hydrolyzes to a greater extent than the anion in the salt.

3. neutral, because NH4OCl is a weak base/weak acid salt.

4. basic, because the anion in the salt hydrolyzes to a greater extent than the cation in the salt.

5. acidic, because the anion in the salt hydrolyzes to a greater extent than the cation in the salt.

6. basic, because the cation in the salt hydrolyzes to a greater extent than the anion in the salt.