Questions and Answers
What is transferred between a conjugate acid-base pair?
a proton
Which compound can act as both a Bronsted-Lowry acid and a Bronsted-Lowry base?
water
In the reaction CO3^2- + H2O HCO3^- + OH-, the carbonate ion is acting as a?
Bronsted-Lowry base
Which of the following represents a Bronsted-Lowry conjugate acid-base pair?
Signup and view all the answers
Which of these solutions is the most basic?
Signup and view all the answers
An indicator is what type of compound?
Signup and view all the answers
What characterizes a strong acid or base?
Signup and view all the answers
What is another name for the acid dissociation constant?
Signup and view all the answers
How many ionization constants are associated with oxalic acid?
Signup and view all the answers
A 0.12 M solution of an acid that ionizes only slightly in solution would be termed?
Signup and view all the answers
Which of the following pairs consists of a weak acid and a strong base?
Signup and view all the answers
A substance with a Ka of 1 x 10^-5 would be classified as a?
Signup and view all the answers
The ionization constant (Ka) of HF is 6.7 x 10^-4. Which of the following is true in a 0.1 M solution of this acid?
Signup and view all the answers
If an acid has a Ka = 1.6 x 10^-10, what is the acidity of the solution?
Signup and view all the answers
The Ka of carbonic acid is 4.3 x 10^-7. What does this mean for H2CO3?
Signup and view all the answers
Which acid has the greatest acid dissociation constant?
Signup and view all the answers
Which base is strong, but never concentrated?
Signup and view all the answers
A base has a Kb of 2.5 x 10^-11. Which of the following statements is true?
Signup and view all the answers
Which base has the smallest base dissociation constant?
Signup and view all the answers
Study Notes
Conjugate Acid-Base Pairs
- A conjugate acid-base pair differs by a single proton.
- Conjugate pairs include NH4^+ and NH3, where the proton is transferred.
Bronsted-Lowry Acid and Base Concepts
- Water can function as both a Bronsted-Lowry acid and base.
- In the reaction CO3^2- + H2O ⇌ HCO3^- + OH-, carbonate ion acts as a Bronsted-Lowry base.
Acid-Base Properties
- A solution with [H+] = 1 x 10^-11 M is considered the most basic.
- Strong acids and bases exhibit complete ionization in water.
- Weak acids and bases, like acetic acid or ammonia, exhibit partial ionization.
Ionization Constants
- The acid dissociation constant is also known as the ionization constant.
- Oxalic acid has two ionization constants, reflecting its ability to donate two protons.
- A weak acid is classified with a Ka value of 1 x 10^-5 or lower.
- Carbonic acid (H2CO3) has a Ka of 4.3 x 10^-7, indicating it is a poor hydrogen-ion donor.
Solutions and Concentrations
- A 0.12 M acid solution that ionizes slightly is termed dilute and weak.
- Nitric acid has the greatest acid dissociation constant, suggesting it is a strong acid.
- Magnesium hydroxide is a strong base that is not usually found in concentrated forms.
Fundamental Relationships in Solutions
- In a 0.1 M solution of HF (with Ka = 6.7 x 10^-4), [HF] is greater than [H+][F-], indicating an equilibrium favoring the non-dissociated form.
- The acidity of a solution with a Ka of 1.6 x 10^-10 cannot be defined without additional information.
- A base with Kb of 2.5 x 10^-11 ionizes slightly in aqueous solution, indicative of weak base behavior.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of conjugate acid-base pairs and the Bronsted-Lowry acid-base theory. This quiz will cover properties of acids and bases, their ionization constants, and basicity of solutions. Perfect for chemistry students exploring these fundamental concepts.
