Asample of pure water is heated to a temperature of 112 c at a pressure of 20 mpa, where the ionization constant for water is 4.0 x 10­12. what is the oh ­concentration in the pure water at these conditions?

Explanation:

The ionization constant of the water = at a temperature of and pressure of 20 MPa

Water dissociates as;

The expression for the ionization constant is :

For pure water,

So,

The concentration of the hydroxide ions, .