/

Practice Question A solution that is at a pH of 1 ______ than a solution with a pH of 9.

A. has fewer hydrogen ions

B. has more hydrogen ions

C. has an equal number of hydrogen ions

D. is less concentrated

Answer Explanation:

Therefore, the Correct Answer is B.

More Questions on TEAS 7

  • Q #1: Practice Question A solution that is at a pH of 1 ______ than a solution with a pH of 9.

    A. has fewer hydrogen ions

    B. has more hydrogen ions

    C. has an equal number of hydrogen ions

    D. is less concentrated

    Answer Explanation

  • Q #2: Which of these numbers best represents an alkaline solution?

    A. 1

    B. 6

    C. 7

    D. 12

    Answer Explanation

    Th pH scale runs from 0 to 14. Acid substances have pH values between 0 and 7 While alkaline solutions have pH values between 7 and 14. A neutral solution has a pH value of 7. Thus, from the question above, a pH value of 12 represent an alkaline solution.

  • Q #3: Which of the following is correct regarding the pH scale?

    A. A substance with a pH of 3 is two times more acidic than a substance with a pH of 4.

    B. A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4.

    C. A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4.

    D. A substance with a pH of 3 is 10 times more alkaline than a substance with a pH of 4.

    Answer Explanation

    The pH scale is a quantitative measure of the concentration of hydrogen ions in a solution. It tuns from 1 to 14 and the pH values less than 7 signify a solution is acidic, while those values greater than 7 are basic or alkaline. A solution with a pH of 7 is neutral. The pH scale is logarithmic and every unit of pH corresponds tie 10-fold change in acidity. As the pH decreases, the acidity of the solution increases. Therefore, a solution with a pH of 3 is 10 times more acidic than a solution with a pH of 4.