교과서 질문
Calculate the pH of a solution made by adding 2.50 g of lithium oxide 1Li2O2 to enough water to make 1.500 L of solution.
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Ch.16 - Acid-Base Equilibria
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
16장, 문제 101
Which, if any, of the following statements are true? (a) The stronger the base, the smaller the pKb. (b) The stronger the base, the larger the pKb. (c) The stronger the base, the smaller the Kb. (d) The stronger the base, the larger the Kb. (e) The stronger the base, the smaller the pKa of its conjugate acid. (f) The stronger the base, the larger the pKa of its conjugate acid.
검증된 단계별 안내1
Understand the relationship between base strength and Kb: A stronger base has a larger Kb value because it dissociates more in solution, increasing the concentration of OH⁻ ions.
Relate Kb to pKb: pKb is the negative logarithm of Kb (pKb = -log(Kb)). Therefore, a larger Kb results in a smaller pKb.
Analyze statement (a): 'The stronger the base, the smaller the pKb.' This is true because a stronger base has a larger Kb, leading to a smaller pKb.
Analyze statement (b): 'The stronger the base, the larger the pKb.' This is false because a stronger base has a larger Kb, which results in a smaller pKb.
Consider the relationship between a base and its conjugate acid: A stronger base has a weaker conjugate acid, which means the conjugate acid has a larger pKa. Therefore, statement (f) is true.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
4m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Base Strength and pKb
The strength of a base is inversely related to its pKb value. A stronger base has a lower pKb, indicating a greater tendency to accept protons. This relationship is crucial for understanding how bases behave in chemical reactions and how their strength can be quantified.
추천 영상:
가이드 코스
00:50
Strength of Conjugate Acids and Bases
Base Strength and Kb
The base dissociation constant (Kb) measures the strength of a base in solution. A stronger base corresponds to a larger Kb value, reflecting its ability to dissociate and produce hydroxide ions. This concept is essential for comparing the relative strengths of different bases.
추천 영상:
가이드 코스
03:01Ka and Kb Relationship
Conjugate Acids and pKa
The pKa of a conjugate acid is a measure of its acidity, with lower pKa values indicating stronger acids. For a stronger base, the pKa of its conjugate acid will be smaller, as stronger bases correspond to weaker conjugate acids. Understanding this relationship helps in predicting the behavior of acids and bases in chemical equilibria.
추천 영상:
가이드 코스
01:30Conjugate Acid-Base Pairs
관련 실천
교과서 질문
Indicate whether each of the following statements is correct or incorrect. (c) Conjugate acids of weak bases produce more acidic solutions than conjugate acids of strong bases.
268
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교과서 질문
Predict how each molecule or ion would act, in the Brønsted-Lowry sense, in aqueous solution by writing 'acid,' 'base,' 'both,' or 'neither' on the line provided. (b) Prozac
408
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교과서 질문
A solution is made by adding 0.300 g Ca1OH221s2, 50.0 mL of 1.40 M HNO3, and enough water to make a final volume of 75.0 mL. Assuming that all of the solid dissolves, what is the pH of the final solution?
1014
views
교과서 질문
Indicate whether each of the following statements is correct or incorrect. (d) K+ ion is acidic in water because it causes hydrating water molecules to become more acidic.
330
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