p-Block elementsHard

Question

HBr amd HI reduce sulphuric acid, HCl can reduce KMnO4 and HF can reduce :

Options

A.H2SO4
B.KMnO4
C.K2Cr2O7
D.None of these

Solution

Becuse F is strongest oxidising agent and so F-is weakest reducing agent so it is not reduced by any reagent.
          2HBr + H2SO4 → SO2 + 2H2O + Br
          2HI + H2 SO4 → SO2 + 2H2O + I2
16HCl + 2KMnO4 → 2KCl + 2MnCl2 + 8H2O + 5Cl2

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