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Oxidising Reagent and Reducing Reagent

Consider the ...

Question

Consider the following list of reagents:
$Acidified K_{2} C r_{2} O_{7}, Alkanline K M n O_{4}, C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}, a n d N a_{2} S_{2} O_{3}$
Which of the following reagents can oxidise aqueous iodide to iodine

A

Acidified K_{2} C r_{2} O_{7}

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B

N a_{2} S_{2} O_{3}

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C

C l_{2}

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D

O_{3}

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Solution

The correct option is D $O_{3}$
$I^{-} t o I_{2}$ oxidation can be done by acidified $K_{2} C r_{2} O_{7}, C u S O_{4}, H_{2} O_{2}$
$K_{2} C r_{2} O_{7} + K I + H_{2} S O_{4} \to K_{2} S O_{4} + C r_{2} (S O_{4})_{3} + I_{2} + H_{2} O$
$2 C u S O_{4} + 4 K I + \to C u I ↓ + I_{2} + 2 K_{2} S O_{4}$
$H_{2} O_{2} + 2 K I \to 2 K O H + I_{2}$
$2 K I + C l_{2} \to 2 K C l + I_{2}$
$H_{2} O + 2 K I + O_{3} \to 2 K O H + O_{2} + I_{2}$
$F e C l_{3} + 2 K I \to 2 K C l + F e C l_{2} + I_{2}$
$H N O_{3} + K I \to K N O_{3} + I_{2} + N O ↑$
$N a_{2} S_{2} O_{3} + K I \to no reaction$
In $H_{2} O_{2} and O_{3}, I^{-} t o I_{2} oxidation will occur initially.$
However as concentration of $K O H$ builds up, it will begin causing disproportination resulting $I_{2} t o I O_{3}^{-}$
In alkaline $K M n O_{4}$ iodide is oxidised to iodate.

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Similar questions

Q. Consider the following list of reagents:

Acidified K_{2} C r_{2} O_{7}, Alkanline K M n O_{4}, C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}, a n d N a_{2} S_{2} O_{3}

Which of the following reagents can oxidise aqueous iodide to iodine

Q. Consider the following list of Reagents: Acidified

K_{2} C r_{2} O_{7}

K M n O_{4}

C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}

N a_{2} S_{2} O_{3}

. The total number of reagents that can oxidise aqueous iodide to iodine is:

Q. Consider the following list of reagents.
Acidified

K_{2} C r_{2} O_{7}

K M n O_{4}, C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}

N a_{2} S_{2} O_{3}

.
Which of the given reagents can oxidise aqueous iodide to iodine?

Q. Consider the following list of reagents: Acidified

K_{2} C r_{2} O_{7}

K M n O_{4}

C u S O_{4}

H_{2} O_{2}

C l_{2}

O_{3}

F e C l_{3}

N a_{2} S_{2} O_{3}

. The total number of reagents that can oxidise aqueous iodide to iodine is:

Q. Consider the following list of reagents:
Acidified

K_{2} {C r}_{2} O_{7}

K M n O_{4}, C u {S O}_{4}, H_{2} O_{2}, {C l}_{2}, O_{2}, F e {C l}_{2}, H {N O}_{3}

{N a}_{2} S_{2} O_{3}

. The total number of reagents that can oxidise aqueous iodide to iodine is:

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