15.7) Determine whether each of the following changes is an oxidation or reduction. a) gain of electrons reduction b) loss of electrons oxidation c) Fe2+ to Fe³+ oxidation d) NADH to NAD+ oxidation lost bond to hydrogen atom e) FAD to FADH₂ reduction gained bond to hydrogen atom f) CH4 to CO₂ oxidation gained bonds to oxygen atoms and lost bonds to hydrogen atoms g) NAD+ to NADH reduction gained bond to hydrogen atom EXPLANATION: A useful mnemonic to differentiate oxidation and reduction is the term "OILRIG" (Oxidation is the Loss of electrons; Reduction is the Gain of electrons). It is possible to identify redox reactions for inorganic compounds by inspecting the chemical equation and determining if electrons are transferred from one species to another. If the charge of an atom or ion in a reactant was increased (toward positive) in the conversion of reactants to products, an oxidation occurred. If the charge of an atom or ion in a reactant was decreased (toward negative) in the conversion of reactants to products, a reduction occurred. lose electrons (oxidation) charge 3- 0 1+ 2+ 3+ gain electrons (reduction) 2- 1- For covalent compounds, such as organic and biological compounds, the gaining and losing of electrons is the result of a gain or loss of bond(s) to oxygen atoms or hydrogen atoms.
15.7) Determine whether each of the following changes is an oxidation or reduction. a) gain of electrons reduction b) loss of electrons oxidation c) Fe2+ to Fe³+ oxidation d) NADH to NAD+ oxidation lost bond to hydrogen atom e) FAD to FADH₂ reduction gained bond to hydrogen atom f) CH4 to CO₂ oxidation gained bonds to oxygen atoms and lost bonds to hydrogen atoms g) NAD+ to NADH reduction gained bond to hydrogen atom EXPLANATION: A useful mnemonic to differentiate oxidation and reduction is the term "OILRIG" (Oxidation is the Loss of electrons; Reduction is the Gain of electrons). It is possible to identify redox reactions for inorganic compounds by inspecting the chemical equation and determining if electrons are transferred from one species to another. If the charge of an atom or ion in a reactant was increased (toward positive) in the conversion of reactants to products, an oxidation occurred. If the charge of an atom or ion in a reactant was decreased (toward negative) in the conversion of reactants to products, a reduction occurred. lose electrons (oxidation) charge 3- 0 1+ 2+ 3+ gain electrons (reduction) 2- 1- For covalent compounds, such as organic and biological compounds, the gaining and losing of electrons is the result of a gain or loss of bond(s) to oxygen atoms or hydrogen atoms.
Transcribed Image Text:15.7) Determine whether each of the following changes is an oxidation or reduction.
a) gain of electrons reduction
b) loss of electrons oxidation
c) Fe²+ to Fe³+ oxidation
d) NADH to NAD+ oxidation
lost bond to hydrogen atom
e) FAD to FADH₂ reduction
gained bond to hydrogen atom
f) CH4 to CO₂ oxidation
gained bonds to oxygen atoms
and lost bonds to hydrogen atoms
g) NAD+ to NADH reduction
gained bond to hydrogen atom
EXPLANATION:
A useful mnemonic to differentiate oxidation and reduction is the term "OILRIG"
(Oxidation is the Loss of electrons; Reduction is the Gain of electrons).
It is possible to identify redox reactions for inorganic compounds by inspecting the
chemical equation and determining if electrons are transferred from one species to
another.
If the charge of an atom or ion in a reactant was increased (toward positive)
in the conversion of reactants to products, an oxidation occurred.
If the charge of an atom or ion in a reactant was decreased (toward negative)
in the conversion of reactants to products, a reduction occurred.
lose electrons (oxidation)
charge 3-
0
gain electrons (reduction)
2-
1-
1+
2+ 3+
For covalent compounds, such as organic and biological compounds, the gaining and
losing of electrons is the result of a gain or loss of bond(s) to oxygen atoms or
hydrogen atoms.
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