Chemistry · Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions
Which of the following is a redox reaction?
Which of the following is a redox reaction?
- A. Reaction of \( H_{2} S O_{4} \) with \( N a O H \)
- B. In atmosphere, formation of \( O_{3} \) from \( O_{2} \) by lightening
- C. Formation of oxides of nitrogen from nitrogen and oxygen by lightening
- D. Evaporation of \( H_{2} O \)
Step-by-step solution
A redox reaction involves changes in oxidation states. In option C, nitrogen (0 in N2) is oxidized to +2 in NO, and oxygen (0 in O2) is reduced to -2 in NO, so it is a redox reaction. Options A and D are not redox (neutralization and physical change). Option B involves no change in oxidation state (oxygen remains 0 in both O2 and O3).
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