[valon.ajeti]

Hello guys ,

I only have one question that I cannot seem to understand yet.
Right now I am dealing with the Equilibrium Constants , Hydrolysis Constants etc. , and what I do not understand is : Why do we use another component's data (Kh , Ka , Kb etc.) to determine our component's required data ?

For ex: What is the Hydrolysis grade of 0.05M Iron (III) Chloride - FeCl₃ , when we know that the Kh_Fe(OH2)6 = 2 x 10^-4mol/dm³ ?

I just want to know the purpose of this "trick" , since it confuses me a lot of times , when solving problems.

Any help or hint would be very much appreciated.


Regards,
V.

[opsomath]

I am having trouble understanding your question. What do you mean by hydrolysis grade?

[valon.ajeti]

Well , I did not know how to say it in English , but by that I mean the percentage of how much does a substance hydrolysis - %H , anyways that is not quite important for the question.

The point of my question is , why do they sometimes put another substance's information to find another one's information.

[opsomath]

Presumably to test your ability to convert between related quantities, to test your understanding I guess.

[Borek]

grade = degree