00:01
First we need a balanced chemical reaction.
00:03
We have ammonia reacting with hcl producing ammonium chloride.
00:12
The stoichiometry is one to one.
00:15
Now we need to calculate the equivalence point volume.
00:18
If we start with 50 milliliters of ammonia, we convert that into liters by dividing by a thousand, and then we convert those liters into moles using the molarity of ammonia, 0 .29 moles ammonia per liter.
00:41
Then from the stoichiometry of the reaction we recognize that one mole of ammonia reacts with one mole of hcl.
00:51
Now that we know the moles of hcl, we can calculate the liters of hcl using its molarity.
00:57
One liter hcl has 0 .20 moles in it, and then last of all we go to milliliters by multiplying by a thousand, and we'll need 72 .5 milliliters of hcl to reach the equivalence point.
01:19
Once we have reached the equivalence point, we have this in solution.
01:25
Ammonium chloride has ammonium serving as the conjugate acid to ammonia, so the solution is acidic and it's governed by the concentration of ammonia, i'm sorry ammonium...