Which of the following reactions involves oxidation-reduction Options: A . &nbsp N a B r + H C l ⟶ N a C l + H B r B . &nbsp H B r + A g N O 3 ⟶ A g B r + H N O 3 C . &nbsp H 2 + B r 2 ⟶ 2 H B r D . &nbsp 2 N a O H + H 2 S O 4 ⟶ N a 2 S O 4 + 2 H 2 O

Which of the following reactions involves oxidation-reduction

Discussion Forum : Redox Reactions

Question -

Which of the following reactions involves oxidation-reduction

Options:

A .

N a B r + H C l ⟶ N a C l + H B r

B .

H B r + A g N O_{3} ⟶ A g B r + H N O_{3}

C .

H_{2} + B r_{2} ⟶ 2 H B r

D .

2 N a O H + H_{2} S O_{4} ⟶ N a_{2} S O_{4} + 2 H_{2} O

Answer: Option C
:
C

Observe this reaction:

In the elemental state, both $H_{2}$ and $B r_{2}$ have zero Oxidation numbers. In $H B r$ - the hydrogen atom has +1 oxidation state whereas the bromine atom has -1 oxidation state.

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Discussion Forum : Redox Reactions

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