00:01
Okay, so here we have a neutralization reaction between sodium hydroxide and hydrochloric acid.
00:09
So we can first start out with the base because we know what's its concentration and we know how many milliliters we used of it.
00:19
And so our goal is to go from moles of the base into moles of the acid so we can find out its concentration.
00:25
But in order to do that, we need to get rid of units of volume on the bottom.
00:29
So what we'll need to do is multiply by the volume that we've used, which is 83 milliliters of the base.
00:37
But in order to cancel units, we first need to change our volume into units of milliliters.
00:43
So liters cancel, and then when we multiply by 83 milliliters, milliliters cancel.
00:50
So now we're in moles of nahoh, and if we know this reaction is a one -to -one.
00:57
So 1 mole of hcl will neutralize 1 mole with sodium hydroxide to make water and salt...