00:01
We want to determine if any of these substances will be a strong enough acid to react almost completely with sodium hydroxide.
00:09
And they tell us that the p .k .a.
00:11
Of water is 15 .74.
00:14
Now, the reason why they're telling us the p .k .a.
00:16
Of water is because, remember, this is going to be our conjugate acid after we react.
00:24
So to react, to be more in the forward direction, i should say, we want to go from a lower pca to a higher pca.
00:48
So the pkk we have on this side is going to be 15 .74.
00:53
So now we just need to put the four pks they give us in the previous one.
00:58
And a little jingle that i remember to help with this is low to high, it will fly, high to low, it won't go.
01:09
All right, so now let's see...