- #1
rohanprabhu
- 414
- 2
Many of the chemical laws/concepts we deal with which relate some number to the 'quantity' of the reactants and/or products or the quantity of these substances among themselves, talk about 'activity'. For example, the law of mass action, or the Equilibrium constant.
But I've seen that they use concentration and active mass interchangeably. So.. my question is what exactly is activity? How does it differ from concentration and why is it that activity becomes approximately equal to concentration for very dilute solutions.
and.. also.. why is the activity of solids taken to be unity?
thanks
But I've seen that they use concentration and active mass interchangeably. So.. my question is what exactly is activity? How does it differ from concentration and why is it that activity becomes approximately equal to concentration for very dilute solutions.
and.. also.. why is the activity of solids taken to be unity?
thanks