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Question

The HF−2 ion exists in the solid state and also in liquid HF solution but not in dilute aqueous solution because:

A
H3O+ and F are much more likely to be formed in an aqueous solution
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B
HF is weaker acid than H2O
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C
HF has H - bonding
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D
None of these
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Solution

The correct option is A H3O+ and F are much more likely to be formed in an aqueous solution
In aqueous solutions, because there is more water, each HF molecule hydrogen bonds with the much more prevalent H2O present instead of other HF molecules. Thus, H3O+ and F are much more likely to be formed.

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