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
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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
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Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: The initial concentration and Ka of several weak acid (HA) solutions are listed. For which solution is the x is small approximation least likely to work in finding the pH?(a) initial [HA] = 0.100 M; K

Problem

The initial concentration and Ka of several weak acid (HA) solutions are listed. For which solution is the x is small approximation least likely to work in finding the pH?
(a) initial [HA] = 0.100 M; Ka = 1.0 x 10–5
(b) initial [HA] = 1.00 M; Ka = 1.0 x 10–6
(c) initial [HA] = 0.0100 M; Ka = 1.0 x 10–3
(d) initial [HA] = 1.0 M; Ka = 1.5 x 10–3