Answer: The acidic anhydride of HNO3 is C) N2O5.
Step-by-step explanation:
HNO3: This chemical formula represents nitric acid. Nitric acid is a strong acid commonly used in various chemical processes.
N2O5: This chemical formula represents dinitrogen pentoxide. It is a compound composed of two nitrogen atoms (N) and five oxygen atoms (O). Dinitrogen pentoxide is a powerful oxidizing agent and is often used in chemical reactions.
Now, let's discuss what an "acidic anhydride" means in this context:
Anhydride: In chemistry, an anhydride is a compound formed by removing water (H2O) from another compound. It is derived from the word "anhydrous," which means "without water."
Acidic Anhydride: An acidic anhydride is a specific type of anhydride that is formed when a molecule derived from an acid loses water. It often has acidic properties and can react with water to regenerate the original acid.
So, when it is stated that "The acidic anhydride of HNO3 is N2O5," it means that N2O5 can be formed from nitric acid (HNO3) by removing water molecules. N2O5 is indeed an acidic anhydride of nitric acid because it can release protons (H+) when it reacts with water to regenerate nitric acid:
HNO3 (nitric acid) + H2O (water) ⇌ N2O5 (dinitrogen pentoxide)
In this reaction, N2O5 takes on the role of an acidic anhydride by forming nitric acid when it reacts with water.