HCl -> H+ + Cl-

In this scenario would the HCl be a strong acid and the Cl- the base? And do you only use the word conjugate bases when dealing with weak acids? Thanks.

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  1. Cl^- is a base, yes.
    HCl is a strong acid because it ionizes 100%. We often omit the water from strong and weak acid ionizations; technically we should include water in those reactions.
    If you write the equation as
    HCl + H2O ==> H3O^+ + Cl^-
    Then HCl is an acid and Cl^- is the conjugate base; H2O is the base and H3O^+ is the conjugate acid. It makes it a little harder to identify acids and bases if the H2O is omitted from the equation. There is no reason to suggest that this theory is useful only for weak acids.

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  2. Thanks DrBob!

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