Asked in 24th Self Assessment Test
Water is amphoteric because:
Correct answer: E. Both A and C
- A. It acts both as an acid and a base
- B. It can dissolve both acids and bases
- C. It can give off H+ and OH- ions
- D. In its pure form, it has pH=7
- E. Both A and C
Explanation
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About Bronsted-Lowry and Lewis Concepts
The Brønsted-Lowry concept defines acids as proton donors and bases as proton acceptors, producing conjugate acid-base pairs. The Lewis concept extends the idea to electron-pair acceptors and donors, so compounds such as BF3 and NH3 can be treated as acid and base even without proton transfer, unlike the Arrhenius definition.
Practise Acids, Bases and Salts
314 free Acids, Bases and Salts MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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