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7. Redox reactions — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry7. Redox reactions1 Mark
MCQ
Which of the following reactions is an example of a redox reaction ?
  • ✓
    $XeF_4 + O_2F_2 \rightarrow XeF_6 + O_2$
  • B
    $XeF_2 + PF_5  \rightarrow [XeF]^+ PF_6^-$
  • C
    $XeF_6 + H_2O \rightarrow XeOF_4 + 2HF$
  • D
    $XeF_6 + 2H_2O \rightarrow XeO_2F_2 + 4HF$
✓

Answer

Correct option: A.
$XeF_4 + O_2F_2 \rightarrow XeF_6 + O_2$
a
The following reaction is an example of redox reaction as xenon undergoes oxidation from state $+4$ to $+6$ and oxygen undergoes reduction from state $+1$ to $0 .$

$\stackrel{+4}{\mathrm{X}} \mathrm{eF}_{4}+\stackrel{+1}{\mathrm{O}_{2}} \mathrm{F}_{2} \rightarrow \stackrel{+6}{\mathrm{Xe}} \mathrm{F}_{6}+\stackrel{0}{\mathrm{O}_{2}}$

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