Calculate the Ka of a 0.35M weak acid with a pH of 4.2.

Ka = 1.14x10⁻⁸

Explanation:

First we calculate [H⁺] from the pH:

For a monoprotic weak acid, the molar concentration of H⁺ of a solution can be expressed as:

Where C is the molar concentration of the weak acid solution.

the correct answer is boyle

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.