Which of the following chemical reactions depicts the oxidizing behaviour of $H_{2} S O_{4}$ ?

2 P C l_{5} + H_{2} S O_{4} \to 2 P O C l_{3} + 2 H C l + S O_{2} C l_{2}

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2 H I + H_{2} S O_{4} \to I_{2} + S O_{2} + 2 H_{2} O

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C a (O H)_{2} + H_{2} S O_{4} \to C a S O_{4} + 2 H_{2} O

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N a C l + H_{2} S O_{4} \to N a H S O_{4} + H C l

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Solution

The correct option is B $2 H I + H_{2} S O_{4} \to I_{2} + S O_{2} + 2 H_{2} O$
Solution
In reaction B Oxidation of I changes from -1 to 0 and oxidation of S reduces from +4 to +2.
Therefore I get oxidised and S get reduced
In A C D reactions oxidation of S is not reducing
The correct answer is B

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Similar questions

Which of the following chemical reaction depicts the oxidizing behavior of $H_{2} S O_{4}$ ?

H_{2} S O_{4}

S O_{2}

95^{\circ} C

S O_{2} + C l_{2} \to S O_{2} C l_{2} (Yield = 75 %)

S O_{2} C l_{2} + 2 H_{2} O \to H_{2} S O_{4} + 2 H C l (Yield = 80 %)

H_{2} S O_{4} + C a (O H)_{2} \to C a S O_{4} + 2 H_{2} O (Yield = 100 %)

C a S O_{4}

S O_{2}

H_{2} S O_{4}

C a (O H)_{2} .

C a S O_{4}

H_{2} S O_{4} + C a (O H)_{2} \to C a S O_{4} + 2 H_{2} O

H_{2} O_{2}

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