Which of the following reactions involves oxidation-reduction Options: A . &nbspNaBr+HCl⟶NaCl+HBr B . &nbspHBr+AgNO3⟶AgBr+HNO3 C . &nbspH2+Br2⟶2HBr D . &nbsp2NaOH+H2SO4⟶Na2SO4+2H2O

Which of the following reactions involves oxidation-reduction

Question

Which of the following reactions involves oxidation-reduction

Options:

A . NaBr+HCl⟶NaCl+HBr

B . HBr+AgNO3⟶AgBr+HNO3

C . H2+Br2⟶2HBr

D . 2NaOH+H2SO4⟶Na2SO4+2H2O

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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