Calculate the pH of a 0.2 M * 4 solution for which Kb = 1.8*10^-5 at 26 c . The equation for the reaction Nh3+H2O->NH4+oh

The pH of the solution is 11.24

Explanation:

We are given:

Molarity of ammonia = 0.2 M

The given chemical equation follows:

I:                0.2

C:               -x                      +x        +x

E:             0.2-x                     x          x

The expression for equilibrium constant follows:

Putting values in above expression, we get:

Neglecting the negative value of x as concentration cannot be negative.

So,

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution.

Putting values in above equation, we get:

We know:

Hence, the pH of the solution is 11.24

answer; natural resources;

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.