Question

The $H{F}_2^{-}$ ion exists in the solid state and also in liquid $HF$ solution but not in dilute aqueous solution because :

• A. in aqueous solution, there is hydrogen bonding but each $HF$ molecule hydrogen bond with the much more prevalent $H_{2}O$ present instead of other $HF$ molecules, and $H_3{O}^{+}$ and $F^{⊝}$ are much more likely to be formed.
• B. $HF$ is weaker acid than $H_{2}O$
• C. $HF$ has H-bonding
• D. none of these

Answer 1

The correct option is A in aqueous solution, there is hydrogen bonding but each $HF$ molecule hydrogen bond with the much more prevalent $H_{2}O$ present instead of other $HF$ molecules, and $H_3{O}^{+}$ and $F^{⊝}$ are much more likely to be formed.

in aqueous solution, there is hydrogen bonding but each $HF$ molecule hydrogen bond with the much more prevalent $H_{2}O$present instead of other $HF$ molecules, and $H_3{O}^{+}$ and $F$ are much more likely to be formed.