Final answer:
Nitric acid, represented by HNO3, is a strong acid. In a 35 percent solution of nitric acid, it dissociates to release H+ ions, confirming it as an Arrhenius acid.
Step-by-step explanation:
The question pertains to a solution that is 35 percent nitric acid. Given the options provided, the correct answer is a. Acid. Nitric acid, or HNO3, is a well-known strong acid used in various industrial and laboratory processes. When nitric acid dissociates in water, it releases H+ ions and NO3- ions, classifying it as an Arrhenius acid. Within the realm of acid-base chemistry, the presence of the hydrogen ion (H+) is characteristic of acidic compounds, distinguishing them from bases, which often contain hydroxide ions (OH-).