AP Chemistry
8.6 Molecular Structure of Acids and Bases
The table below provides the acid-ionization constant, \(K_a\), and bond enthalpy for two hydrogen halides at \(298\text{ K}\).
Which of the following statements best compares the acid strength of \(\text{HF}\) to that of \(\text{HCl}\) and provides the correct justification?
| Hydrogen Halide | \(K_a\) at \(298\text{ K}\) | \(\text{H}-\text{X}\) Bond Enthalpy (\(\text{kJ/mol}\)) |
|---|---|---|
| \(\text{HF}\) | \(6.3 \times 10^{-4}\) | \(567\) |
| \(\text{HCl}\) | \(\gg 1\) | \(431\) |
Which of the following statements best compares the acid strength of \(\text{HF}\) to that of \(\text{HCl}\) and provides the correct justification?
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