Answer to Question #129020 in General Chemistry for mike

Question

Which one of the following solutions is the most highly acidic and why?
A. hydrogen chloride in water; concentration of H3O+ = 0.001M
B. sodium hydroxide in water; concentration of OH- = 0.200M
C. acetic acid in water; concentration of H3O+ = 0.004M
D. nitric acid in water; concentration of H3O+ = 0.0001M

Answer 1

more the concentration of H₃O⁺ higher will be acidity.

C is most acidic as it has H₃O⁺ = 0.004 M is highest among all so most acidic