Exceptionally low acidic strength of HF is due to:
Correct answer: C. Strong hydrogen bonding
- A. The strong polar bond between H&F
- B. Smaller size of Fluorine
- C. Strong hydrogen bonding
- D. More electronegativity of flourine
Explanation
Acidic strength is a measure of to what extent the acid releases its proton. The more easily an acid releases its proton, the stronger it is. The exceptionally low acidic strength of HF is due to hydrogen bonding. The partially positive hydrogen is entrapped between two highly electronegative atoms of F.So it is difficult for HF to release a proton. That's why its acidic strength is low as compared to HI, Hcl, etc.
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