00:03
Hello, in this question, we are asked to identify the conjugate acid -based pairs.
00:09
So i'd like to start off by talking about what a conjugate acid -based pair is.
00:13
How are we going to identify it? so a conjugate acid -based pair means two substances that differ by a single proton.
00:37
And remember, a proton is a hydrogen ion.
00:41
So, in other words, an h -plus.
00:45
The acid has it.
00:47
The base does not.
00:49
So the acid has the extra proton, and its conjugate base does not.
01:04
But that one hydrogen is the only difference between the two.
01:10
There may be other hydrogens in the substance, but we are just looking for the fact that the two substances differ by one hydrogen.
01:19
Okay, so let's look at our first pair here.
01:23
We are looking on, and the conjugate acid -based pair will occur on opposite sides of the equation.
01:30
So starting with hno2, we are looking for something on the product side that either has one more hydrogen or one less hydrogen.
01:40
And we see the no2 minus.
01:43
So this would be a conjugate acid -based pair...