Skip to main content
Ch.4 - Reactions in Aqueous Solution
Brown - Chemistry: The Central Science 15th Edition
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoBrown 15th EditionCh.4 - Reactions in Aqueous SolutionProblema 34b
Capitolo 4, Problema 34b

State whether each of the following statements is true or false. Justify your answer in each case. (b) HF is a strong acid.

Guida verificata passo dopo passo
1
HF is hydrofluoric acid, and it is important to understand the concept of acid strength.
The strength of an acid is determined by its ability to dissociate in water to produce hydrogen ions (H^+).
Strong acids completely dissociate in water, while weak acids only partially dissociate.
HF is known to only partially dissociate in water, which means it does not release all of its hydrogen ions into the solution.
Therefore, HF is considered a weak acid, not a strong acid.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Acid Strength

Acid strength refers to the ability of an acid to donate protons (H+) in a solution. Strong acids completely dissociate in water, releasing all their protons, while weak acids only partially dissociate. Understanding the distinction between strong and weak acids is crucial for evaluating statements about their properties.
Video consigliato:
Percorso guidato
03:51
Binary Acid Strengths

HF as a Weak Acid

Hydrofluoric acid (HF) is classified as a weak acid because it does not fully dissociate in water. Although it can donate protons, its dissociation is limited, resulting in a lower concentration of H+ ions compared to strong acids. This characteristic is essential for determining the truth of the statement regarding HF's acidity.
Video consigliato:
Percorso guidato
00:44
ICE Charts of Weak Acids

Dissociation Constant (Ka)

The dissociation constant (Ka) quantifies the strength of an acid in solution. A higher Ka value indicates a stronger acid, while a lower Ka value suggests a weaker acid. For HF, the Ka is relatively low, reinforcing its classification as a weak acid and supporting the conclusion that the statement about it being a strong acid is false.
Video consigliato:
Percorso guidato
03:50
Characteristics of Ka and Kb
Pratica correlata
Domanda del libro di testo

State whether each of the following statements is true or false. Justify your answer in each case. (b) HCl is a weak acid.

330
views
Domanda del libro di testo

State whether each of the following statements is true or false. Justify your answer in each case.

(c) Although sulfuric acid is a strong electrolyte, an aqueous solution of H2SO4 contains more HSO4- ions than SO42- ions.

1108
views
1
comments
Domanda del libro di testo

Label each of the following substances as an acid, base, salt, or none of the above. Indicate whether the substance exists in aqueous solution entirely in molecular form, entirely as ions, or as a mixture of molecules and ions. (a) HF

390
views
Domanda del libro di testo

Label each of the following substances as an acid, base, salt, or none of the above. Indicate whether the substance exists in aqueous solution entirely in molecular form, entirely as ions, or as a mixture of molecules and ions. (b) acetonitrile, CH3CN

587
views
Domanda del libro di testo

State whether each of the following statements is true or false. Justify your answer in each case. (c) Methanol is a base.

360
views
Domanda del libro di testo

State whether each of the following statements is true or false. Justify your answer in each case. (a) NH3 contains no OH- ions, and yet its aqueous solutions are basic

507
views