Calculate [h3o^+] of an aqueous solution that is 7.5 × 10^-5 in OH^- Be sure your answer has the correct number of significant figures.
Note: Reference the Fundamental constants table for additional information.
To calculate [H3O+], we can use the equation Kw = [H3O+][OH-].
Given that [OH-] = 7.5 × 10^-5 M, we can substitute this value into the equation:
Kw = [H3O+][7.5 × 10^-5]
1.0 × 10^-14 = [H3O+][7.5 × 10^-5]
[H3O+] = (1.0 × 10^-14) / (7.5 × 10^-5)
[H3O+] = 1.33 × 10^-10 M
Therefore, the concentration of [H3O+] in the solution is 1.33 × 10^-10 M. This answer has the correct number of significant figures based on the provided data.