00:01
The balanced chemical reaction that we are considering is sodium hydroxide.
00:09
That's really interesting.
00:10
Okay, so the actual chemical reaction is sodium hydroxide reacting with h2 -s -o -4, going to sodium sulfate and h2o.
00:30
To balance it, all we need to do is put a 2 here and a 2 here, but for some reason they have rewritten this equation where everything has been multiplied by two.
00:48
So they actually have, which is not conventional, they have 4 -2 -4.
01:02
I'm not quite sure why.
01:05
But anyway, either way, we'll get the same answer.
01:09
How many grams of sodium sulfate are produced from, 10 grams of sodium hydroxide.
01:17
So we'll take our 10 grams sodium hydroxide, divided by the molar mass of sodium hydroxide, which we can calculate from the molar masses that are given, or we can just look it up.
01:34
One mole sodium hydroxide is the mass of one mole sodium, one mole oxygen, and one more hydrogen, which gives us 39 .99711 grams.
01:50
And then we look at the stoichiometry of the reaction.
01:55
Four -mole sodium hydroxide produced two moles of sodium sulfate, or two -moles sodium hydroxide produces one -mole sodium sulfate...