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: 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 #2: What effect do acids have on indicators like litmus paper?

A. Turn it blue

B. Turn it red

C. Turn it green

D. No effect

Answer Explanation

Acids turn litmus paper red. Litmus is a common indicator that changes color in response to the acidity or basicity of a solution. In the presence of an acid, litmus paper turns red.
Q #3: Which of the following metals will not react with hydrochloric acid (HCl)?

A. Iron (Fe)

B. Magnesium (Mg)

C. Zinc (Zn)

D. Gold (Au)

Answer Explanation

Gold (Au) is a noble metal and does not react with hydrochloric acid (HCl). Iron, magnesium, and zinc are reactive metals that can undergo displacement reactions with hydrochloric acid to produce hydrogen gas.

Free Access on TEAS 7 Exams and Study Notes

Access to all TEAS 7 Exams
Performance Tracking and Analysis
Well Documented and Explained Questions and Answers
2000+ Questions and Correct Answers: Answers Well Explained
Libary of Detailed StudyNotes
Topical Questions and Answers on Examinable topics

Join Now

Which of the following statements about strong acids is true?

More Questions on TEAS 7 Science

Q #1: How do acids affect the electrical conductivity of a solution?

Answer Explanation

Q #2: What effect do acids have on indicators like litmus paper?

Answer Explanation

Q #3: Which of the following metals will not react with hydrochloric acid (HCl)?

Answer Explanation

Free Access on TEAS 7 Exams and Study Notes

TEAS 7 Exams (Q&A)

TEAS 7 Study Notes

TEAS 7 Topical Tests

TEAS 7 Study Guides

Quick Links

Refer a Friend