Asked in ETEA MDCAT 2010 2010

A metallic oxide when added to water would most likely form an

Correct answer: A. Base

  • A. Base
  • B. Acid
  • C. Salt
  • D. Basic anhydride

Explanation

Metallic oxides that are basic will react with water to form a basic solution. For example, sodium oxide (Na2O) reacts with water to form sodium hydroxide (NaOH), a strong base. Therefore, the most likely product formed when a metallic oxide is added to water is a base.

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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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