Hydrochloric acid(HCl), hydrobromic acid(HBr), and hydroiodic acid(HI) are all considered strong acids. Another hydrogen halide, hydrofluoric acid(HF) is a weak acid. Why is this the case, when HF has the greatest bond polarity of all these hydrogen halides?
Relative polarity: HI < HBr < HCl < HF
2007-03-27 04:46:05 · 3 answers · asked by rob d 1 in Science & Mathematics ➔ Chemistry
Since HF has strong bond polarity, it is harder for it to dissociate in an aqueous solution. If it doesn't dissociate, it is a weak acid. The bond polarity of the other acids in the group decreases as we go down so the ability to dissociate increases, thus increasing strenght of the acid.
2007-03-27 04:52:22 · answer #1 · answered by Anonymous · 0⤊ 0⤋
weak acids are acids that ionize partly in aqueous solution while strong acids ionize completely in aqueous solution and strong acids also conduct electricity very well while that of weak acids conduct electricity in a low level
2007-03-27 04:56:26 · answer #2 · answered by Little princess 2 · 0⤊ 0⤋
its harder to sperate as hydrogen bonding occurs in HF
2007-03-27 04:50:14 · answer #3 · answered by Maureen 3 · 0⤊ 0⤋