Conjugate acid-base pairs (video) | Khan Academy
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And it's doing that by donating or losing, so I'll put a minus for losing a proton.
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So our HF loses a proton that forms our F minus or fluoride ion. And then we can look at that same process happening in the backwards reaction.
So if we look at the backwards reaction, which is also happening, the fluoride ion can pick up or accept a proton from somewhere. So it can pick up an H plus, so I'll have a plus, H plus here.
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And so when fluoride accepts a proton, we reform our HF. So we can see that HF and F minus have this special relationship where you can form one or the other by losing or gaining a proton. And we can see a similar relationship between water and hydronium. So, water here, we said water is accepting a proton from HF, so we see that water will gain a proton, and that will give us hydronium.
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- Conjugate acid-base pairs
In the reverse reaction, hydronium can lose a proton to reform water. So, minus H plus. So again we have these two species, water and hydronium, that are related to each other by having, or not having, one H plus.
So in chemistry, we call these species that are related in this way conjugate acid-base pairs. So the official definition, or my official definition of a conjugate acid-base pair is when you have two species that are related to each other. Let's see, two species that are related to each other, related by one H plus.
In this case, we have HF and F minus that are related to each other by that one H plus. And so HF and F minus are a conjugate acid-base pair. We also have water and hydronium, which are also related by that one H plus.
So water and H3O plus are also a conjugate acid-base pair. You can probably tell from the name, but whenever you have a conjugate acid-base pair, one thing in the pair will be an acid, and the other thing will always be a base. The definition of which one is the acid and which one is the base comes from the Bronsted-Lowry definition of acids and bases.
So the Brondsted-Lowry definition says anything that can donate an H plus, so anything that will give away an H plus is an acid.
So we can see that, in this case, our hydrofluoric acid is acting as the acid in the conjugate acid-base pair. And that means that fluoride has to be acting as the base. And that makes sense, because the Bronsted-Lowry definition of a base is something that will accept an H plus.
And that's exactly what it does in the reverse reaction. Your F minus will pick up an H plus and go back to your acid.What Are The Sexual Bases?
So we can also look at water and H3O plus. So here, water is gaining a proton, or accepting it, so water is acting as a base.
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And in the reverse reaction, H3O plus is donating a proton, so H3O plus is acting as an acid. The relationship between conjugate acid-base pairs we can write a little bit more generally. So, if we represent any generic acid as HA. So this is our acid.
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We said that a acid is something that donates a proton. So it'll lose the proton, and when it does that, it will form the conjugate base, which is represented by A minus. In a rush to pass the specifically spelled-out bases, foreplay isn't even a priority — first base isn't something to brag about to your "bros.
This is especially key for women, who are more likely to orgasm when oral sex is involved. Many have said that letting a man go down on her feels "intimate and emotional and thus more desirable in a relationship," not something to be shared with just a fling. Ultimately, the ranking ends up disregarding the ways women experience sex and orgasm, focusing the system inherently on male pleasure. Within this "base system," sex is only sex when it is P-in-V — you're just building up until you score a penetrative home run.
But sex is more than that. Making penetration sex the goal is essentially framing the game around the heterosexual male experience of pleasure. That focus on "real" sex not only ignores the intricacies of female pleasure; the base system also disregards the queer experience of gays, lesbians, asexual people and other sexual minorities.
That is kind of ridiculous and contributes to that black-and-white idea of what sexuality is. Sex is personal, and the experience varies. But when it becomes goal-oriented, the individual experience is erased, replaced by a checklist that treats intimate interactions as items to be checked off.