00:01
Okay, so the question is, what is the solubility of the calcium carbonate? if we already know that the ksp of the kasym carbonate is about 8 .7 times 10 to minus 9.
00:20
And we know the more mass of the calcium carbonate is 100 .9 grams per more.
00:28
So first, we need to write down the dissolving equation for the calcium carbonates, which is calcium carbonates in the solid state.
00:39
When you put in the solution, it dissociate into the calcium 2 plus and the carbonates, two minors.
00:54
So we know the solubility is basically the concentration in the saturated solution.
01:02
So we can assume the concentration of the saturated solution should be the c.
01:09
If c .mors, the calcium carbonate dissolved in the water, the concentration of the calcium 2 plus will also be the c.
01:18
Since the ratio of the calcium 2 plus and the carbonates 2 minus is 1 to 1, so the concentration of the carbonates will also be c.
01:31
So then what we can do is write down the expression of the ksp, the equilibrium constant, which is, the concentration of the calcium 2 plus times the concentration of the carbonates.
01:47
That's equal to c squared...