Acids can be defined in various ways (Arrhenius, Brønsted-Lowry, Lewis). Brønsted-Lowry acids are proton donors. Lewis acids are electron pair acceptors. Bases are proton acceptors (Brønsted-Lowry) or electron pair donors (Lewis). Ammonia is a common example of a base.
Which one of the following compounds is NOT considered an acid ?
Asked in UPSC CAPF 2015 · Topic: Acid, Base and Salt (Definitions of Acids and Bases (Arrhenius and Brønsted-Lowry concepts))
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