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.
