Skip to main content
Ch.17 - Aqueous Ionic Equilibrium
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 4th EditionCh.17 - Aqueous Ionic EquilibriumProblema 54c
Capitolo 17, Problema 54c

Determine whether or not the mixing of each pair of solutions results in a buffer. c. 165.0 mL of 0.10 M HF; 135.0 mL of 0.050 M KOH

Guida verificata passo dopo passo
1
Identify the components of the solution: HF is a weak acid and KOH is a strong base.
Calculate the moles of HF using the formula: moles = concentration \( \times \) volume. Convert the volume from mL to L before calculating.
Calculate the moles of KOH using the same formula: moles = concentration \( \times \) volume. Again, convert the volume from mL to L before calculating.
Determine the reaction between HF and KOH: HF will react with KOH to form water and the conjugate base, F\(^-\).
Check if the resulting solution contains a significant amount of both the weak acid (HF) and its conjugate base (F\(^-\)) to determine if it is a buffer.

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:
6m

Concetti chiave

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

Buffer Solutions

A buffer solution is a system that resists changes in pH upon the addition of small amounts of acid or base. It typically consists of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffers are crucial in maintaining stable pH levels in various chemical and biological processes.
Video consigliato:
Percorso guidato
03:02
Buffer Solutions

Weak Acids and Bases

Weak acids, like hydrofluoric acid (HF), only partially dissociate in solution, establishing an equilibrium between the undissociated acid and its ions. In contrast, strong bases, such as potassium hydroxide (KOH), fully dissociate in solution. Understanding the behavior of weak acids and bases is essential for predicting the outcome of mixing solutions.
Video consigliato:
Percorso guidato
00:51
ICE Charts of Weak Bases

Stoichiometry of Acid-Base Reactions

Stoichiometry involves the calculation of reactants and products in chemical reactions. In the context of acid-base reactions, it is important to determine the moles of acid and base present to assess whether they will neutralize each other or if there will be excess reactants. This balance is key to understanding if a buffer will form after mixing.
Video consigliato:
Percorso guidato
01:09
Acid-Base Reaction
Pratica correlata
Domanda del libro di testo

Determine whether or not the mixing of each pair of solutions results in a buffer. d. 175.0 mL of 0.10 M NH3; 150.0 mL of 0.12 M NaOH

385
views
Domanda del libro di testo

Determine whether or not the mixing of each pair of solutions results in a buffer. a. 75.0 mL of 0.10 M HF; 55.0 mL of 0.15 M NaF b. 150.0 mL of 0.10 M HF; 135.0 mL of 0.175 M HCl d. 125.0 mL of 0.15 M CH3NH2; 120.0 mL of 0.25 M CH3NH3Cl

2588
views
1
rank
Domanda del libro di testo

Determine whether or not the mixing of each pair of solutions results in a buffer. e. 105.0 mL of 0.15 M CH3NH2; 95.0 mL of 0.10 M HCl

738
views
Domanda del libro di testo

Blood is buffered by carbonic acid and the bicarbonate ion. Normal blood plasma is 0.024 M in HCO3- and 0.0012 M H2CO3 (pKa1 for H2CO3 at body temperature is 6.1).

a. What is the pH of blood plasma?

1608
views
Domanda del libro di testo

Determine whether or not the mixing of each pair of solutions results in a buffer. e. 125.0 mL of 0.15 M NH3; 150.0 mL of 0.20 M NaOH

528
views