Question

what is the meaning of base​

Answer 1

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Arrhenius proposed in 1884 that a base is a substance which dissociates in aqueous solution to form hydroxide ions OH-. ... A soluble base is called an alkali if it contains and releases OH− ions quantitatively. Metal oxides, hydroxides, and especially alkoxides are basic, and conjugate bases of weak acids are weak bases.

Answer 2

Base is the constant number