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Which of the following chemical reaction...

Which of the following chemical reactions depicts the oxidizing behaviour of `H_2SO_4` ?

A

`2HI +H_2SO_4 to I_2 + SO_2 +2H_2O`

B

`Ca(OH)_2 + H_2SO_4 to CaSO_4 + 2H_2O`

C

`NaCl + H_2SO_4 to NaHSO_4 + HCl`

D

`2PCl_5 + H_2SO_4 to 2POCl_3 + 2HCl + SO_2Cl_2`

Text Solution

Verified by Experts

The correct Answer is:
A
`2HI + H_2SO_4 to I_2 + SO_2 + 2H_2O`
On left hand side oxidation state of sulphur = 6 On right hand side oxidation state of sulphur = 4 `H_2SO_4` is reduced and iodide ions are oxidized to iodine by conc. `H_2SO_4`.
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