Question

what is acid explain​

Answer 1

An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons. ... The word acid comes from the Latin words acidus or acere, which mean "sour," since one of the characteristics of acids in water is a sour taste (e.g., vinegar or lemon juice).

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Answer 2

Answer:

An acid is a compound which when dissolved in water yields hydronium ions

($H_{3}O^{+}$)as the only positively charged ions.