Which of the following chemical equations represents a redox reaction? A. 2Na + 2H2O → 2NaOH + H2 B. HCl + KOH → KCl + H2O C. AgNO3(aq) + NaCl(aq) → NaNO3(aq) + AgCl(s) + H2O(l) D. Fe3+ + 3NO3– + 3Na+ + 3OH–→ Fe(OH)3 + 3Na+ + 3NO3–

1 answer
Question:

Which of the following chemical equations represents a redox reaction?
A. 2Na + 2H2O → 2NaOH + H2
B. HCl + KOH → KCl + H2O
C. AgNO3(aq) + NaCl(aq) → NaNO3(aq) + AgCl(s) + H2O(l)
D. Fe3+ + 3NO3– + 3Na+ + 3OH–→ Fe(OH)3 + 3Na+ + 3NO3–

Answers

Answer:[tex]$2Na+2H_{2}O \to 2NaOH+H_{2}$[/tex]Explanation:Redox reaction is a reaction in which both oxidation and reduction reactions are carried out.In given reactions, if we observe the reaction that indicating redox reaction is [tex]$2Na+2H_{2}O \to 2NaOH+H_{2}$[/tex]This is because in this reaction oxidation number of sodium is increased from [tex]$0$ to $1$[/tex]. And thus it is oxidized while the oxidation number of hydrogen is decreased from [tex]$+1$ to $0$[/tex][tex]$2Na^{0}+2H_{2}^{+1}O^{-2} \to 2Na^{+1}O^{-2}H^{+1}+H_{2}^{0}$[/tex]Hence this reaction is redox reaction  

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