How can you tell conjugate acid and base pairs apart?

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How can you tell conjugate acid and base pairs apart?

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Answer 1 · 2016-10-06T14:37:17

By adding or subtracting $H^{+}$ $H^+$ .........

Explanation:

By adding or subtracting $H^{+}$ $H^+$ and conserving mass and charge. The conjugate base of any acid, $H A$ $HA$ , is $A^{-}$ $A^-$ , and the conjugate acid of any base $H A$ $HA$ is $H_{2} A^{+}$ $H_2A^+$ . In both these instances MASS and CHARGE have been conserved.

It is trivial to determine the conjugate base of $H X$ $HX$ , i.e. it is the original acid LESS a proton, i.e. $X^{-}$ $X^-$ . And the conjugate acid of $H X$ $HX$ is $H_{2} X^{+}$ $H_2X^+$ . For both examples we started with a definite substance, here $H X$ $HX$ , to which we added or subtracted $H^{+}$ $H^+$ .

Can you tell me the conjugate acid and conjugate base of sulfuric acid, $H_{2} S O_{4}$ $H_2SO_4$ ?

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How can you tell conjugate acid and base pairs apart?

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