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Ch.16 - Acids and Bases
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.16 - Acids and Bases문제 41a
16장, 문제 41a

Classify each acid as strong or weak. If the acid is weak, write an expression for the acid ionization constant (Ka). a. HNO3

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1
Identify the acid: The given acid is HNO_3, which is nitric acid.
Determine if the acid is strong or weak: Nitric acid (HNO_3) is a strong acid.
Strong acids completely dissociate in water, so they do not have an acid ionization constant (K_a) expression.
Recall that strong acids include HCl, HBr, HI, HNO_3, H_2SO_4, and HClO_4.
Since HNO_3 is a strong acid, it fully dissociates in solution, and we do not write a K_a expression for it.

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Strong vs. Weak Acids

Strong acids completely dissociate in water, releasing all their hydrogen ions (H+) and resulting in a high concentration of H+ ions in solution. Examples include hydrochloric acid (HCl) and nitric acid (HNO3). In contrast, weak acids only partially dissociate, establishing an equilibrium between the undissociated acid and its ions, leading to a lower concentration of H+ ions.
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가이드 코스
02:19
Weak Acid-Strong Base Titration Curve

Acid Ionization Constant (Ka)

The acid ionization constant (Ka) quantifies the strength of a weak acid in solution. It is defined as the equilibrium constant for the ionization reaction of the acid, represented as Ka = [H+][A-]/[HA], where [H+] is the concentration of hydrogen ions, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the undissociated acid. A larger Ka value indicates a stronger weak acid.
추천 영상:
가이드 코스
03:50
Characteristics of Ka and Kb

Classification of Acids

Acids are classified based on their ability to donate protons (H+) in solution. Strong acids, like HNO3, are characterized by their complete ionization, while weak acids, such as acetic acid, exhibit partial ionization. Understanding this classification is essential for predicting the behavior of acids in chemical reactions and their impact on pH levels in solutions.
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가이드 코스
04:22
Ligand Classification
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