What is the primary difference between strong acids and weak acids?

Understanding Weak Acids and pH Calculations

Interactive Video
•
Chemistry, Science
•
10th - 12th Grade
•
Hard

Sophia Harris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Strong acids dissociate completely, while weak acids only partially dissociate.
Weak acids dissociate completely in water.
Strong acids have a higher molecular weight.
Weak acids are more reactive than strong acids.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a characteristic of weak acids?
They have a pH of 7.
They are always organic compounds.
They dissociate about 5% in water.
They do not form equilibrium in water.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you identify a weak acid from its formula?
It contains a metal ion.
It is not one of the seven strong acids.
It has a high boiling point.
It is a gas at room temperature.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for acetic acid?
NH3
CH3COOH
HCl
H2SO4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using an ICE table in pH calculations for weak acids?
To determine the boiling point of the solution.
To calculate the initial concentration of the acid.
To track changes in concentrations and establish equilibrium.
To measure the temperature change during the reaction.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can the assumption be made that X in the denominator is negligible in weak acid calculations?
Because the Ka value is large.
Because the initial concentration is zero.
Because the reaction is product-favored.
Because the change in concentration is minimal.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a sign that a substance is a weak acid?
It has a low Ka value.
It is a strong electrolyte.
It has a high Ka value.
It is a solid at room temperature.
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