In the following reaction, identify the species that are oxidized, those that are reduced. In addition, complete the half reactions associated with each reaction by indicating the stoichiometry of each species in the reaction. CH3CH2CHO + NADH + H+ → CH3CH2CH2OH + NAD+
1. Which species is oxidized?
A. CH3CH2CH2OH is oxidized.
B. NAD+ is oxidized.
C. NADH is oxidized.
D. CH3CH2CHO is oxidized.
2) Which species is reduced?
A. CH3CH2CH2OH is reduced.
B. NAD+ is reduced.
C. NADH is reduced.
D. CH3CH2CHO is reduced.
3) Choose the correctly balanced half reactions.
A. 2CH3CH2CHO + 2H+ + 2e- → 2CH3CH2CH2OH.
B. 2NADH + H+ + 2e- → 2NAD+.
C. NADH → NAD+ + H+ + 2e-.
D. CH3CH2CHO + 2H+ + 2e- → CH3CH2CH2OH.

In the following reaction, identify the species that are oxidized, those that are reduced. In addition, complete the half reactions associated with each reaction by indicating the stoichiometry of each species in the reaction.

CH3CH2CHO + NADH + H+ → CH3CH2CH2OH + NAD+

Which species is oxidized?

CH3CH2CH2OH is oxidized

NAD+ is oxidized

NADH is oxidized

CH3CH2CHO is oxidized

2) Which species is reduced?

CH3CH2CH2OH is reduced

NAD+ is reduced

NADH is reduced

CH3CH2CHO is reduced

3) Choose the correctly balanced half reactions.

(Select all that apply.)

2CH3CH2CHO + 2H+ + 2e- → 2CH3CH2CH2OH

2NADH + H+ + 2e- → 2NAD+

NADH → NAD+ + H+ + 2e-

CH3CH2CHO + 2H+ + 2e- → CH3CH2CH2OH

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.