What is the role of the acid dissociation constant (Ka) in understanding acids?

Acid-Base Chemistry Concepts

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Chemistry
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10th - 12th Grade
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Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It measures the strength of a base.
It indicates the concentration of water in a solution.
It is used to calculate the pH of a base.
It shows the degree of dissociation of an acid in water.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the strength of an acid relate to its conjugate base?
Stronger acids have no conjugate bases.
The strength of an acid is unrelated to its conjugate base.
Stronger acids have weaker conjugate bases.
Stronger acids have stronger conjugate bases.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which acid is stronger based on the given Ka values: acetic acid or HF?
Both have the same strength.
Acetic acid is stronger.
Neither is an acid.
HF is stronger.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a reaction where the reactants are favored, which base is stronger?
The base that forms more products.
The base with the lower pH.
The base with the higher concentration.
The base that remains mostly in the reactant form.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What determines the favorability of a reaction in terms of acid and base strength?
The Ka value being less than one.
The presence of a catalyst.
The concentration of water.
The temperature of the solution.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does Coulombic attraction affect acid strength?
Stronger attractions make acids weaker.
Weaker attractions make acids stronger.
Coulombic attraction has no effect on acid strength.
Stronger attractions make acids stronger.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does fluorine increase the acidity of fluoroacetic acid?
Fluorine increases the molecular weight.
Fluorine increases the electronegativity, pulling electrons away from hydrogen.
Fluorine adds more hydrogen atoms.
Fluorine decreases the electronegativity.
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