Question: Which of the following statements about weak acids is true?
Options:
They completely dissociate in solution
They have a high pKa value
They have a low pH
They are strong electrolytes
Correct Answer: They have a high pKa value
Solution:
Weak acids do not completely dissociate in solution and typically have a higher pKa value compared to strong acids.
Which of the following statements about weak acids is true?
Practice Questions
Q1
Which of the following statements about weak acids is true?
They completely dissociate in solution
They have a high pKa value
They have a low pH
They are strong electrolytes
Questions & Step-by-Step Solutions
Which of the following statements about weak acids is true?
Correct Answer: Weak acids do not completely dissociate in solution and typically have a higher pKa value compared to strong acids.
Step 1: Understand what an acid is. An acid is a substance that can donate protons (H+ ions) in a solution.
Step 2: Learn the difference between strong acids and weak acids. Strong acids completely dissociate in water, meaning they break apart into ions fully. Weak acids do not fully dissociate.
Step 3: Recognize that weak acids only partially break apart in solution. This means that not all of the acid molecules release protons.
Step 4: Understand the concept of pKa. pKa is a measure of how strong an acid is; lower pKa values indicate stronger acids.
Step 5: Conclude that weak acids have higher pKa values compared to strong acids because they do not dissociate completely.
No concepts available.
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