00:03
Hi there.
00:04
In this question, we are trying to identify which pair of substances are not a conjugate acid -based pair.
00:11
So to answer that question, i want to take a moment and talk about what a conjugate acid -based pair is.
00:19
What a conjugate acid -based pair is, is a pair of substances, so in other words, two substances, whose formulas differ by a single hydrogen.
00:58
Okay, so they differ by one hydrogen ion.
01:00
The substance that has the extra hydrogen is the acid, and the substance without that extra hydrogen is its conjugate base.
01:09
But we are just trying to decide which of these pairs is not a conjugate acid -based pair.
01:15
So let's look at pair for a here.
01:18
We have h3, p -o -4, and h -p -o -4 with a two -negative charge.
01:32
Okay, as we look at these two formulas, do they differ by just, one hydrogen and the answer to that is no.
01:40
This one has three hydrogens.
01:43
This one only has one hydrogen.
01:46
So they differ by two hydrogens...