These are the pairings of the changes with the reactions:
How to pair the reactions
C2H6O to C2H4O2: This change from ethanol (C2H6O) to acetic acid (C2H4O2) is associated with an oxidation reaction, often observed in the oxidation of alcohols to form carboxylic acids.
Ketone to Alcohol: The conversion from a ketone to an alcohol involves a reduction reaction, which typically occurs in the reduction of carbonyl compounds (such as ketones) to form alcohols.
Fe^3+ to Fe^2+: The change from iron in the +3 oxidation state (Fe^3+) to the +2 oxidation state (Fe^2+) is due to a reduction reaction, common in various chemical processes where iron ions gain electrons.
Cu to Cu^2+: This change represents an oxidation reaction, observed when copper metal (Cu) reacts with oxygen or acids, leading to the formation of copper ions in the +2 oxidation state (Cu^2+).
C6H12O6 to CO2: The transformation from glucose (C6H12O6) to carbon dioxide (CO2) involves an oxidation reaction, as seen in cellular respiration where glucose undergoes oxidation to produce energy and CO2.
2Ag^+ to 2Ag: The change from silver ions (Ag^+) to elemental silver (Ag) is due to a reduction reaction, commonly observed in processes involving the reduction of metal ions to form pure metals.
CH3CH2OH to CH3CH3: The alteration from ethanol (CH3CH2OH) to ethane (CH3CH3) indicates an oxidation reaction, typically observed in the dehydration or dehydrogenation of alcohols to form alkenes or alkanes.
NO3^- to NO2^-: The change from nitrate ion (NO3^-) to nitrite ion (NO2^-) signifies a reduction reaction, commonly observed in various biological and chemical processes involving the reduction of nitrogen compounds.
Question
Determine whether each of the following changes represents oxidation or reduction.
C2H6O to C2H4O2
Ketone to Alcohol
Fe^3+ to Fe^2+
Cu to Cu^2+
C6H12O6 to CO2
2Ag^+ to 2Ag
CH3CH2OH to CH3CH3
NO^3- to NO^2-