What is the H₃O⁺ ion concentration in an aqueous solution having an OH^- concentration of 1.0×10^{- 2} M?

Question

Quizplus · Accepted Answer

The given chemical formula H₃O⁺ contains three types of ions: H₃O- (which we can simplify to HSO4-), H+, and OH-. The concentration of HSO4- is not relevant to the question, so we can ignore it. Since the concentration of OH- is given as 1.0×10^{- 2} M, we can use the self-ionization constant of water to find the concentration of H+. At room temperature, Kw = 1.0×10^{- 14}, and we know that [OH-][H+] = Kw. Substituting in the given [OH-], we get: [OH-][H+] = 1.0×10^{- 14} (1.0×10^{- 2})([H+]) = 1.0×10^{- 14} ([H+]) = 1.0×10^{- 14} / (1.0×10^{- 2}) ([H+]) = 1.0×10^{- 12} M Therefore, the concentration of H+ is 1.0×10^{- 12} M, which is answer choice D.

What Is the H3O+ Ion Concentration in an Aqueous Solution

What Is the H₃O⁺ Ion Concentration in an Aqueous Solution