Question

Why do all acids contains hydrogen?

Answer 1

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Here first of all I am providing you some important information about Hydrogen.
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Hydrogen (H)
Atomic No.....1
Rest Configuration.....1s^1
Atom Weight.....1.008
Atomic Radius.....0.37
Electron Affinity.....-77
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Now, here is your answer...

All acids contains hydrogen atoms. Apart from hydrochloric acid, this is not clear from their names, but you can tell they contain hydrogen from their chemical formulae.
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