00:01
Okay, so what is the ph of this phenol solution when it's titrated with the k -o -h to the half -equence point? so actually for this question, we don't really have to care about the concentrations of the phenol or the concentration of the k -o -h.
00:17
We only need to focus on what is the half -equence point.
00:21
So for the titration curve, when you titrate with the k -o -h, basically the it looks like this, right? the amount of the k -o -h, the ph.
00:41
So when you do the titration, it looks like this.
00:46
And we know when you have a dramatic ph change, you reach the equivalence point.
00:55
So what is half -equivalence point? that is, right, the value is only half the value of the equivalence point, which is value one -half.
01:07
So at this point, you know what actually half of the acid is consumed, which means half the acid is consumed, and there would be half of the acid available.
01:28
So in this case, since you have the phenol, it's a weak acid.
01:32
That means you have half the phenol acid available.
01:38
And another half was converted into the sodium source.
01:46
In this case it's potassium sort...