Basics Of Acids, Bases And pH

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Basics Of Acids, Bases And pH - Quiz

This quiz will evaluate your knowledge on the basic concepts of Acids, Bases and pH.
Explanations to the correct answers will be provided as each question is answered.


Questions and Answers
  • 1. 

    pH is a measure of ____ ions.

    • A.

      Oxygen

    • B.

      Hydrogen

    • C.

      Hydroxide

    • D.

      None of the above

    Correct Answer
    B. Hydrogen
    Explanation
    pH is a measure of hydrogen ions (H+).
    pOH is a measure of hydroxide ions (OH-) in a solution.

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  • 2. 

    Acids and bases can combine to create water and salts.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Acids and bases combine to create water and salts.
    Example:
    When Sodium hydroxide (NaOH) and hydrochloric acid (HCl) combine to form the salt sodium chloride.

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  • 3. 

    Neutral solutions have a pH of

    • A.

      0

    • B.

      7

    • C.

      14

    • D.

      A neutral solution does not have a pH

    Correct Answer
    B. 7
    Explanation
    A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.

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  • 4. 

    What is meant when an acid is referred to as monoprotic?

    • A.

      Acid having two dissociable protons

    • B.

      Acid having three dissociable protons

    • C.

      Acid having no dissociable protons

    • D.

      Acid having only one dissociable proton

    Correct Answer
    D. Acid having only one dissociable proton
    Explanation
    Monoprotic - means one dissociable protons; therefore D is the correct answer.
    A = Diprotic – means two dissociable protons
    B = Triprotic – means three dissociable protons

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  • 5. 

    Which is NOT a property of a base?

    • A.

      Sour taste

    • B.

      Turns red litmus to blue

    • C.

      Slippery

    • D.

      Bitter taste

    Correct Answer
    A. Sour taste
    Explanation
    Sour taste corresponds to Acids NOT bases

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  • 6. 

    There are a variety of strengths of acids and bases.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Strong Acid- closest to pH 0
    Weak Acid- closest to pH 7 (neutral)
    Strong Base- closest to pH 14
    Weak Base- closest to pH 7 (neutral)

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  • 7. 

    What is the correct definition for a Bronsted-Lowry acid?

    • A.

      Any substance that ionizes when it dissolves in water to give the H+ ion.

    • B.

      Any substance that can donate a proton, H+ ion to a base.

    • C.

      Any substance that can donate a pair of nonbonding electrons.

    • D.

      Any substance that can accept a pair of nonbonding electrons.

    Correct Answer
    B. Any substance that can donate a proton, H+ ion to a base.
    Explanation
    B is the correct answer since :
    A: Is the definition for a Arrhenius acid - Any substance that ionizes when it dissolves in water to give the H+ ion.
    C: Is the definition of a Lewis base - Any substance that can donate a pair of nonbonding electrons.

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  • 8. 

    An acid’s pH is between :

    • A.

      0-7

    • B.

      7

    • C.

      7-14

    • D.

      There is no way to discover an acids pH

    Correct Answer
    A. 0-7
    Explanation
    The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.

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  • 9. 

    Vinegar is an example of:

    • A.

      Strong Base

    • B.

      Weak Base

    • C.

      Strong Acid

    • D.

      Weak Acid

    Correct Answer
    D. Weak Acid
    Explanation
    Vinegar is an acid with a pH of that is typically around 2.5, therefore a weak acid. Although a weak acid, as any other substance, if used in excess it can do great damage to ones stomach.

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  • 10. 

    What is true when acids and bases neutralize each other.

    • A.

      The amount of H+ and OH- is the same

    • B.

      Water is produced

    • C.

      Salt is produced

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    When acids and bases combine they react to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water.

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  • 11. 

    A base is a substance

    • A.

      That releases OH- ions when dissolved in water

    • B.

      That releases H+ ions when dissolved in water

    • C.

      Does not release any ions when dissolved in water

    • D.

      None of the above

    Correct Answer
    A. That releases OH- ions when dissolved in water
    Explanation
    Bases are substances which release OH- (hydroxide) ions when dissolved in water. Acids release H+ ions in water.

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  • Current Version
  • Sep 14, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 07, 2009
    Quiz Created by
    Rijkaaa
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