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KF combines with HF to form KHF(2). The ...

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)`

Text Solution

Verified by Experts

The correct Answer is:
C
The fluoride ion, by a process of hydrogen bonding, forms the anion, `HF_(2)^(-)`. The compound is written as `K^(+)[HF_(2)]^(-)`.
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Knowledge Check

  • KF combination 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^(-)`

  • KF combines with to form KHF_2 . The compound contains the species :

    A
    ` K^+ , F^-0` and `H^+`
    B
    `K^+ , F^- ` and `HF`
    C
    ` K^+` and `[ HF_2 ]^-`
    D
    ` [kHF]^+` and `F^-`

  • An element A ( at. wt . = 75) and B( at. wt . =25) combine to form a compound. The compund contain 75% A by weight. The formula of the compound will be

    A
    AB
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    `AB_(3)`
    C
    `A_(3)B`
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