which element is present in all acids...????
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hydrogen in some acids
and oxygen in some acids
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"an acid is a compound containing hydrogen replaceable by a metal". Thus HCl is an acid (hydrochloric acid) because the hydrogen can be replaced by a metal e.g. sodium giving NaCl, sodium chloride or common salt, whereas methane CH4 is not an acid since the hydrogen is not replaceable by a metal.
Because most acids contain oxygen, at one time it was thought that ALL acids contain oxygen. Indeed the very name "oxygen" comes from the Greek for "acid producer". The German word for oxygen is "sauerstoff" - "sour stuff" or "acid substance".
Because most acids contain oxygen, at one time it was thought that ALL acids contain oxygen. Indeed the very name "oxygen" comes from the Greek for "acid producer". The German word for oxygen is "sauerstoff" - "sour stuff" or "acid substance".
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