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Valency and Oxidation State

Which of the ...

Question

Which of the following reactions involves oxidation and reduction?

N a B r + H C l \to N a C l + H B r

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H B r + A g N O_{3} \to A g B r + H N O_{3}

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H_{2} + B r_{2} \to 2 H B r

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N a_{2} O + H_{2} S O_{4} \to N a_{2} S O_{4} + H_{2} O

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Solution

The correct option is A $H_{2} + B r_{2} \to 2 H B r$
In this reaction, both oxidation as well as reduction is involved. $H_{2} + B r_{2} \to 2 H B r$ .

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Similar questions

A g N O_{3} + N a B r \to N a N O_{3} + A g B r

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

A g N O_{3} + N a C l \to A g C l + N a N O_{3}

N a O H + H C l \to N a C l + H_{2} O

H N O_{3} + C a {(O H)}_{2} \to C a {(N O_{3})}_{2} + H_{2} O

N a O H + H_{2} S O_{4} \to {N a}_{2} S O_{4} + H_{2} O

N a C l + A g N O_{3} \to A g C l + N a N O_{3}

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

H N O_{3} + H B r \to N O + B r_{2} + H_{2} O

In the following series of reactions

$N a C l + A \to B + H C l$ , $B + c o k e \to N a_{2} S + C O$

$N a_{2} S + C \to N a_{2} C O_{3} + C a S A$ , $B$ and $C$ are respectively

B r_{2} + S O_{2} + H_{2} O \to H_{2} S O_{4} + H B r

H B r

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