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Superacidity of \({\mathrm{HSO}}_{3}\mathrm{F}+{\mathrm{SbF}}_{5}\) is due to: Memory Based Question 29/Jan/25 Evening s…

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Superacidity of \({\mathrm{HSO}}_{3}\mathrm{F}+{\mathrm{SbF}}_{5}\) is due to:

Memory Based Question 29/Jan/25 Evening shift

a

\({\mathrm{SbF}}_{6}^{-}\)

b

\({\mathrm{H}}_{2}{\mathrm{SO}}_{3}{\mathrm{F}}^{+}\)

c

\({\mathrm{SOF}}_{3}{{\mathrm{SbF}}_{3}}^{-}\)

d

\({\mathrm{HSO}}_{3}\mathrm{F}\)

✓ Correct answer: b)

\({\mathrm{H}}_{2}{\mathrm{SO}}_{3}{\mathrm{F}}^{+}\)

Explanation

Magic acid ( FSO 3H·SbF 5) is a superacid consisting of a mixture, most commonly in a 1:1 molar ratio, of fluorosulfuric acid ( HSO 3F) and antimony pentafluoride ( SbF 5). The super acidity of super acid is due to the formation of \({\mathrm{H}}_{2}{\mathrm{SO}}_{3}{\mathrm{F}}^{+}\)ion .

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