AP EAMCET · Chemistry · Ionic Equilibrium
Which acid among the following has the highest \(\mathrm{p} K_a\) value?
- A \(\mathrm{HCl}\)
- B \(\mathrm{HF}\)
- C \(\mathrm{HI}\)
- D \(\mathrm{HBr}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{HF}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{HF}\left(\mathrm{p} K_a=3.1\right)\) \(\begin{aligned} \operatorname{HCl}\left(\mathrm{p} K_a\right. & =-6.0) \\ \operatorname{HBr}\left(\mathrm{p} K_a\right. & =-9.0) \\ \operatorname{HI}\left(\mathrm{p} K_a\right. & =-9.5) . \end{aligned}\) Therefore, HF has highest…
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