Question

$KF$ combines with $HF$ to form $KHF_2.$ The compound contains the species

• A. $K^+, F^-$ and $H^+$
• B. $K^+ F^-$ and $HF$
• C. $K^+$ and $[HF^2]^-$
• D. $[KHF]^+$ and $F_2$

Answer 1

Answer: (C)

$K^+$ and $[HF^2]^-$

Answer 2

The fluoride ion, by a process of hydrogen bonding, forms the anion, $HF _{2}^{-}$. The compound is written as $K ^{+}\left[ HF _{2}\right]^{-}$.