Question

Please explain why HCl is a stronger acid than HF using bond strength

Answer 1

Answer :

Fluorine in more electronegetive as well as smaller than chlorine. So, the bond between Hydrogen and Fluorine is more polar, resulting the increase in bond strength. This is because, since Fluorine is a smaller atom, so the attraction between the proton(hydrogen ion) and the electrons of the chloride ion will be be higher. Thus separation will be difficult.

Since, separation is difficult, so H and F will not dissociate easily. Therefore, HCl is a stronger acid than HF.