16 flashcards · Shared on 19 August 2026 by AtomAI Library
Flip each card to check yourself.
What is an Arrhenius acid?
A substance that produces hydrogen ions in aqueous solution
What is an Arrhenius acid?
A substance that produces hydrogen ions in aqueous solution
According to the Brønsted–Lowry model, a base is a substance that:
Accepts a proton
Which expression defines the pH of a solution?
pH = −log10[H3O+]
At 25 °C, what is the pH of pure water?
7
Which pH value represents an acidic aqueous solution at 25 °C?
3
A solution changes from pH 5 to pH 4. How does its hydronium ion concentration change?
It increases by a factor of 10
What distinguishes a strong acid from a weak acid?
A strong acid ionizes essentially completely in water
Which statement correctly compares acid strength and concentration?
Strength describes ionization, while concentration describes the amount dissolved per volume
What are the usual products when an acid reacts completely with a metal hydroxide base?
A salt and water
What is a conjugate acid–base pair?
Two species that differ by one proton
When the Brønsted–Lowry acid HCl donates a proton, which conjugate base forms?
Cl−
What is the hydronium ion concentration in a solution with pH 4?
1 × 10−4 mol L−1
A 0.001 mol L−1 solution of a strong monoprotic acid is assumed to ionize completely. What is its approximate pH?
3
At 25 °C, what relationship applies between pH and pOH in an aqueous solution?
pH + pOH = 14
What is the role of an acid–base indicator?
To change color over a particular pH range
Which statement best describes an alkaline solution?
It has more hydroxide ions than hydronium ions