Multiple Choice
Which of the following metals will be oxidized by Co^{2+} ions in an aqueous solution?
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6. Chemical Quantities & Aqueous Reactions
Redox Reactions
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Which one of the following is NOT a redox reaction?
A
AgNO3 + NaCl → AgCl + NaNO3
B
Fe2O3 + 3CO → 2Fe + 3CO2
C
Zn + CuSO4 → ZnSO4 + Cu
D
2H2 + O2 → 2H2O
Verified step by step guidance1
Understand that a redox reaction involves the transfer of electrons, where one species is oxidized (loses electrons) and another is reduced (gains electrons).
Analyze each reaction by assigning oxidation states to all elements in the reactants and products to identify any changes in oxidation numbers.
For the reaction \(\mathrm{AgNO_3 + NaCl \rightarrow AgCl + NaNO_3}\), check the oxidation states of Ag, Na, Cl, N, and O on both sides to see if any element changes its oxidation state.
For the other reactions, similarly assign oxidation states and look for changes indicating oxidation and reduction processes.
Identify the reaction where no element changes its oxidation state; this reaction is NOT a redox reaction.
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