Answer:
D. Nitrous acid
Given Options:
A. Nitric
B. Nitrous
C. Hydronitrous acid
D. Nitrous acid
Explanation:
The following information is provided with the question on Edmentum:
Ternary acids
Ternary acids contain three elements. Here, we will discuss those that contain hydrogen, oxygen, and a third element. These ternary acids are named according to the number of oxygen atoms in each molecule. The most common form is given the -ic suffix, but no prefix is used. So the ternary acid of hydrogen, oxygen, and sulfur is sulfuric acid (H2SO4).
A second acid with the same elements
Sometimes a second acid is formed that contains the same three elements, but fewer oxygen atoms. Still no prefix is used, but the suffix changes from -ic to -ous. So H2SO3 is sulfurous acid.
A third acid with the same elements
If a third acid is formed with the same three elements but even fewer oxygen atoms, the prefix hypo- is added along with the suffix -ous. H2SO2 is called hyposulfurous acid.
Conclusion:
According to the given information, the acid formed with nitrogen that has two oxygen atoms would have the suffix changed from -ic to -ous. Hydronitrous acid can be eliminated because these should be no prefix. Therefore, nitrous acid is the correct answer.
I hope this helps!
