Is HCL a strong acid as concentration increases?

1 Answer
anor277
Jul 5, 2017

By definition, a strong acid is an acid for which the protonolysis......

Explanation:

By definition, a strong acid is an acid for which the protonolysis reaction with the solvent is almost complete, and the given equilibrium LIES STRONGLY to the RIGHT.......

#HX(aq) + H_2O(l) rightleftharpoonsH_3O^+ + X^-#

For #X=Cl, Br, I#, ionization is almost complete, and the solution is quantitative in #H_3O^+#. On the other hand, #HF#, is a weak acid, and the given equilibrium lies to the LEFT.....#K_a(HF)=6.76xx10^-4#.

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