00:01
Alright, so here we have the titration reaction between sulfuric acid and lithium hydroxide.
00:09
And this makes lithium sulfate and water.
00:15
So if 5 milliliters of 120 molar, or 0 .120 molar sulfuric acid is used, we want to know how many millimeters of the base would be required to reach the equivalence point.
00:32
So what we can go, what we can do is see how much.
00:35
Moles of h2s -o -4 we have and convert that into moles of base and then use that and the molarity to find the volume needed.
00:44
So if we start out with the concentration of h2s -o -4, we also have the volume used of this, and so we can get rid of this volume unit on the bottom by multiplying by the volume used.
00:56
But the volume used is 5 milliliters, which means we need to get liters and milliliters into the same units.
01:01
So we can convert liters to milliliters by dividing by a thousand, and then when we multiply by how much we used, volume will cancel out.
01:12
So now we're just in moles of acid, but we want, we're interested in lithium hydroxide here.
01:18
So now we can use our balanced equation to go from moles of acid into moles of base.
01:23
So one mole of h2s .4, because it has a coefficient of one, is equivalent to two moles of lithium hydroxide, because it has a coefficient of two...