An unknown weak acid with a concentration of 0.079 M has a pH of 1.80. What is the Ka of the weak acid

3.18x10⁻³

Explanation:

The equilibrium of a weak acid can be written as:

And Ka can be expressed as:

Keep in mind that [H⁺] = [A⁻].

We can calculate [H⁺] from the pH:

Now we compute the calculated [H⁺] (and [A⁻]) with the [HA] given by the problem:

Ka = = 3.18x10⁻³

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!