Question 14 (5 points) What's the acid ionization constant for an acid with a pH of 2.11 and an equilibrium
concentration of 0.30 M?
O A) 4.87x10-8
B) 1.99x10-6
C) 3.32x10-4
OD) 2.01x10-4

D) 2.01 x 10⁻⁴ .

Explanation:

pH = 2.11

[ H⁺ ] =  

Let the acid be HA

It will ionise as follows .

                                        HA       ⇄       H⁺       +        A⁻

in equilibrium                 .30                                 

Acid ionisation constant Ka  =  

= 2 x 10⁻⁴                

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.