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Weak Acid

Definition

A weak acid is one that does not completely dissociate into its ions in water, meaning only some of its molecules donate protons when placed in water.

Related terms

Strong Acid: An acid that fully dissociates into its ions in water.

pH: A measure of the acidity or alkalinity of a solution, based on the concentration of hydrogen ions.

Dissociation: The process by which compounds split into smaller constituent molecules, often reversibly.

"Weak Acid" appears in:

Study guides (7)

AP Chemistry - 7.13 pH and Solubility
AP Chemistry - 8.1 Introduction to Acids and Bases
AP Chemistry - 8.3 Weak Acid and Base Equilibria
AP Chemistry - 8.5 Acid-Base Titrations
AP Chemistry - 8.8 Properties of Buffers
AP Chemistry - 8.9 Henderson-Hasselbalch Equation
AP Chemistry - 8.10 Buffer Capacity

Practice Questions (5)

Which of the following is the correct equation for the pH of a weak acid strong base reaction?
Which of the following pair is a weak acid strong base reaction?
A solution that contains a weak acid and its conjugate base in roughly equal concentrations is _______________.
You need to prepare a buffer solution of pH 4.178 from 25.0 mL of 0.282 M solution of a sodium salt of a weak acid, NaA where the pKa of the weak acid HA is 4.270. How many moles of 0.329 M HCl do you need to add to achieve this goal?
Which of the following statements best describes the difference between a strong acid and a weak acid?

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