Which ions are produced when anhydrous KF is mixed with anhydrous HF?

Options

A. `K^(+),H^(+),F^(-)`
B. `{KF^(+)(HF^(-))}`
C. `KH^(+),F^(-)`
D. `K^(+),HF_(2)^(-)`

Answer

To determine which ions are produced when anhydrous KF is mixed with anhydrous HF, we can follow these steps:

### Step 1: Identify the Components
- **Anhydrous KF**: This is potassium fluoride, which consists of potassium ions (K⁺) and fluoride ions (F⁻).
- **Anhydrous HF**: This is hydrogen fluoride, which consists of hydrogen ions (H⁺) and fluoride ions (F⁻).

### Step 2: Understand the Interaction
When anhydrous KF is mixed with anhydrous HF, the fluoride ions from both compounds can interact due to the presence of hydrogen bonding.

### Step 3: Analyze the Reaction
- The fluoride ion (F⁻) from KF can form a bond with the hydrogen ion (H⁺) from HF, leading to the formation of a complex ion.
- The reaction can be represented as:
\[ \text{KF} + \text{HF} \rightarrow \text{KHF}_2 \]

### Step 4: Determine the Ions Produced
- The product KHF₂ can be dissociated into ions:
\[ \text{KHF}_2 \rightarrow \text{K}^+ + \text{HF}_2^- \]
- Here, HF₂⁻ is formed due to the hydrogen bonding between the hydrogen from HF and the fluoride ion.

### Conclusion
The ions produced when anhydrous KF is mixed with anhydrous HF are:
- Potassium ion (K⁺)
- Difluoride ion (HF₂⁻)