Hydrogen sulfide
A) is produced when nitrate is used as terminal electron acceptor.
B) is produced by Desulfovibrio.
C) may react with iron to produce a deep red precipitate.
D) has a strong citrus smell.
E) All of the answer choices are correct.

Question

Hydrogen sulfide
A) is produced when nitrate is used as terminal electron acceptor.
B) is produced by Desulfovibrio.
C) may react with iron to produce a deep red precipitate.
D) has a strong citrus smell.
E) All of the answer choices are correct.

Quizplus · Accepted Answer

Hydrogen sulfide is produced by bacteria such as Desulfovibrio, which use sulfate as the terminal electron acceptor in their metabolic processes, not nitrate. Hydrogen sulfide reacts with iron to produce a black precipitate, not a deep red one, and it is known for its characteristic rotten egg smell, not a citrus smell.

Hydrogen Sulfide