00:01
In this video, we're considering the titration of sulfuric acid h2s .o4 with potassium hydroxide, k -o -h.
00:09
It's a diprotic acid, so we'll need twice as much base.
00:12
And we get water, which automatically has a 2 -w in front, and then k2s -4 as our salt.
00:20
So that's our ratio.
00:21
And we want to know the concentration of h2s -4.
00:25
So we're told that we need 41 .22 milliliters of k -o -h.
00:33
Which will convert to leaders just for ease of conversion with the malarities.
00:41
All right.
00:42
And then we're told the concentration of it is 0 .1422.
00:50
So that's 0 .142.
00:55
That should say liters.
00:58
0 .1422 moles of k -oh in every one liter by definition of molarity.
01:06
And we know that the titration proceeds until the moles of k -oh equals the moles of h2s04, or moles of h plus and oh -m.
01:13
As i should say.
01:15
So we have a 2 to 1 ratio here...