Acid-Base Theories Worksheet
Explore the fundamental concepts of Arrhenius, Brønsted-Lowry, and Lewis acid-base theories with this comprehensive worksheet for Grade 11 Chemistry students.
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Acid-Base Theories
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Read each question carefully and provide your best answer based on your knowledge of acid-base theories. Show all your work for calculations.
1. According to the Arrhenius theory, an acid is a substance that:
Donates a proton
Accepts an electron pair
Produces H+ ions in solution
Produces OH- ions in solution
2. Which of the following is a conjugate acid-base pair?
HCl and NaOH
H2SO4 and SO4^2-
NH3 and NH4+
H2O and H3O+
3. A Brønsted-Lowry acid is a proton , while a Brønsted-Lowry base is a proton .
4. A Lewis acid is an electron pair , and a Lewis base is an electron pair .
5. All Arrhenius acids are also Brønsted-Lowry acids.
True
False
6. The pH scale ranges from 0 to 14, where 7 is neutral.
True
False
7. Define amphoteric substance and provide an example.
8. Explain the main difference between a Brønsted-Lowry base and a Lewis base.
9. Refer to the pH scale below and answer the following questions:
a) What is the pH of a neutral solution?
b) Give an example of a substance that is a strong acid and its approximate pH.