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Which of the following statements about strong acids is true?

A. They have a low dissociation constant (Ka)

B. They completely dissociate in solution

C. They are poor conductors of electricity

D. They have a pH greater than 7

Answer Explanation:

Strong acids completely dissociate into ions when dissolved in water, resulting in a high concentration of \(H^+\) ions in solution. This complete ionization distinguishes them from weak acids.

Therefore, the Correct Answer is B.

Q #1: Which of the following properties is a characteristic of acids?

A. Bitter taste

B. Turn litmus paper blue

C. React with metals to release hydrogen gas

D. Do not Conduct electricity in solution

Answer Explanation

Acids react with certain metals to release hydrogen gas. This is a characteristic property of acids known as their reactivity with metals.
Q #2: How do acids affect the electrical conductivity of a solution?

A. They decrease conductivity

B. They increase conductivity

C. They have no effect on conductivity

D. It depends on the concentration of the acid

Answer Explanation

Acids increase the electrical conductivity of a solution. This is because acids ionize in water to produce hydrogen ions (\(H^+\)), which carry an electric charge.
Q #3: Which of the following statements about the taste of acids is true?

A. Acids have a sweet taste

B. Acids have a bitter taste

C. Acids have a sour taste

D. Acids have no taste

Answer Explanation

Acids have a sour taste. This is one of their characteristic properties, though tasting chemicals is not safe and should never be done.

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