If the concentration of HNO3 is 0.01 M, what is the concentration of H+ ions in the solution?

• A. 0.01 M
• B. 0.02 M
• C. 0.1 M
• D. 0.005 M

Answer: (A)

Verified step by step guidance

1. Recognize that HNO3 (nitric acid) is a strong acid, which means it completely dissociates in aqueous solution into H+ and NO3- ions.
2. Write the dissociation equation: \(\mathrm{HNO_3 \rightarrow H^+ + NO_3^-}\).
3. Since the dissociation is complete, the concentration of H+ ions will be equal to the initial concentration of HNO3.
4. Therefore, the concentration of H+ ions is the same as the concentration of HNO3, which is 0.01 M.
5. Conclude that the concentration of H+ ions in the solution is 0.01 M.