Which is a stronger acid: acetic acid or hydrochloric acid?

1 Answer
Jul 5, 2017

Answer:

The mineral acid, #HCl#, is a much stronger acid than #"acetic acid"#.

Explanation:

And how do we assess this? How else but by reference to its acid base equilibrium in water..........

#HX(aq)+H_2O(l)rarrH_3O^+(aq) + X^(-)#

#K_a=([H_3O^+][X^-])/([HX])#

For #"acetic acid"#..........#K_a=1.73xx10^-5#.

For #"HCl"#..........#K_a=1.3xx10^6#.

So hydrochloric acid is over 10 orders of magnitude STRONGER.