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Arrhenius theory of an acid: This theory was discovered by Sir Svante Arrhenius in 1887. According to this theory acids are hydrogen containing compounds, when dissolves in water it gives (H+) ions.
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![\sf \red{What \: is \: Arrhenius's \: definition \: of \: an \: acid?}]()
(B) substance that dissociates.in water to produce hydrogen ions (H+).So, option (B) is correct.
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