23 Questions
What does the equilibrium constant Kw represent?
Equilibrium between H+ and OH- ions in water
What is the pH value of a basic solution?
14
What happens to the concentration of H+ ions in water as the temperature increases?
Increases
What does a pH titration curve show?
How pH of a solution changes during an acid-base reaction
What is the purpose of using specific indicators in reactions?
To indicate a pH change within a certain range
What is the definition of a Brønsted-Lowry acid?
A substance that donates protons
How is acid strength defined?
As a substance that only slightly dissociates in solution with pH 0-1
According to the text, what is the definition of a weak base?
A base that only slightly dissociates in solution with pH 9-11
How are strong acids and strong bases defined according to the text?
As substances that completely dissociate to ions in solution with pH 3-5 and 12-14 respectively
What does pH measure?
Concentration of H+ ions in a solution
Which of the following best describes a Brønsted-Lowry acid?
A substance that accepts protons
What defines a strong base according to the text?
A base that completely dissociates in a solution with pH 12-14
What is the main feature of a weak acid as defined in the text?
It only slightly dissociates in a solution with pH 0-1
How is acid strength defined according to the text?
By its interaction with protons
Which of the following is true about the measurement of pH?
It indicates the concentration of H+ ions in a solution on a scale from 0 to 14.
What characterizes a strong acid according to the text?
It completely dissociates in a solution with pH 3-5
What is the equilibrium constant for the dissociation of water at 25°C?
1 x 10^-14
In an acid-base reaction, what is the significance of the neutralization point?
It signifies the equivalence point.
How does the pH of a weak acid-strong base reaction compare to a strong acid-strong base reaction?
pH is higher in weak acid-strong base reaction.
What happens to the concentration of H+ ions in water as the temperature increases?
Increases
What relationship allows the concentration of H+ ions to be determined if the pH is known?
Equilibrium Constant (Kw)
What does a pH titration curve show?
Change in pH during an acid-base reaction
What is the significance of the equilibrium constant (Ka) for weak acids and bases?
Determines the pH of weak acids and bases
Enhance your understanding of Brønsted-Lowry acids and bases with detailed notes tailored to AQA Chemistry A-level 3.1.12. Learn about acid-base equilibria, proton transfer, and the classification of substances as acids or bases based on their interaction with protons.
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