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Ch.16 - Aqueous Equilibria: Acids & Bases
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145당신이 사용하는 게 아니라요?교과서 변경
모든 교과서McMurry 8th EditionCh.16 - Aqueous Equilibria: Acids & Bases문제 43b
16장, 문제 43b

The following pictures represent solutions of three salts NaA (A- = X-, Y-, or Z-); water molecules and Na+ ions have been omitted for clarity.
Three diagrams showing NaX, NaY, and NaZ salt solutions with A- anions and OH- ions.
(b) Which A- anion has the strongest conjugate acid?

검증된 단계별 안내
1
Identify the components in each solution: NaX, NaY, and NaZ. Note the presence of A- (orange), OH- (red), and HA (gray).
Understand that the presence of HA (gray) indicates the conjugate acid of A-.
Compare the number of HA molecules in each solution. The solution with the most HA molecules indicates the strongest conjugate acid.
Observe that NaY has the highest number of HA molecules compared to NaX and NaZ.
Conclude that the A- anion in NaY has the strongest conjugate acid.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
2m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Conjugate Acids and Bases

In acid-base chemistry, a conjugate acid is formed when a base gains a proton (H+). The strength of a conjugate acid is inversely related to the strength of its corresponding base; a stronger base will have a weaker conjugate acid. Understanding this relationship is crucial for determining which anion (A-) has the strongest conjugate acid among the given salts.
추천 영상:
가이드 코스
01:30
Conjugate Acid-Base Pairs

Acid-Base Strength and pKa

The strength of an acid is often measured by its pKa value, which is the negative logarithm of its acid dissociation constant (Ka). A lower pKa indicates a stronger acid, meaning it dissociates more completely in solution. In this context, comparing the pKa values of the conjugate acids formed from the anions X-, Y-, and Z- will help identify which anion corresponds to the strongest conjugate acid.
추천 영상:
가이드 코스
00:50
Strength of Conjugate Acids and Bases

Salt Hydrolysis

When salts dissolve in water, they can undergo hydrolysis, where the anions and cations interact with water molecules. This process can affect the pH of the solution, depending on whether the anions are derived from strong or weak acids. Anions from weak acids can lead to a more acidic solution, indicating that they have stronger conjugate acids, which is essential for answering the question about the strength of the conjugate acids of the anions.
추천 영상:
가이드 코스
00:50
Ionic Salts
관련 실천
교과서 질문

The following picture represents the hydrated metal cation M1H2O26 n + , where n = 1, 2, or 3.

(b) Does the equilibrium constant increase, decrease, or remain the same as the value of n increases? Explain.

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교과서 질문

The following pictures represent solutions of three salts NaA (A- = X-, Y-, or Z-); water molecules and Na+ ions have been omitted for clarity.

(c) Which A- anion has the smallest value of pKb?

281
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교과서 질문
Locate sulfur, selenium, chlorine, and bromine in the periodic table: (a) Which binary acid 1H2S, H2Se, HCl, or HBr2 is the strongest? Which is the weakest? Explain.
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교과서 질문

The following pictures represent solutions of three salts NaA (A- = X-, Y-, or Z-); water molecules and Na+ ions have been omitted for clarity.

(a) Arrange the three A- anions in order of increasing base strength.

421
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교과서 질문

The following picture represents the hydrated metal cation M1H2O26 n + , where n = 1, 2, or 3.

(a) Write a balanced equation for the reaction of M1H2O26 n + with water and write the equilibrium equation for the reaction.

254
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교과서 질문

Which of the following pictures represents a solution of a weak diprotic acid, H2A? (Water molecules have been omitted for clarity.) Which pictures represent an impossible situation? Explain.

(a) (b) (c) (d)

571
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