Calculating pH

[Amy Shimizu 1J]

In the textbook, it states that the pH =-log[H3O+], but in a review session, we covered that pH=-log[H+]. Could someone clarify if this is the same thing or if both are correct?

[KyLee 1H]

Yes, they mean the same thing! In the real world, you usually do not see H+ atoms floating around in aqueous solutions. Instead, they bond with water (H2O) to form H30+.

[Narin Maisha 2H]

They are the same thing, but simply putting H+ is simplifying it for the sake of the course. Typically it would be found bonded to H20, creasing H30+

[Claire Kim 1F]

In the textbook, it states that the pH =-log[H3O+], but in a review session, we covered that pH=-log[H+]. Could someone clarify if this is the same thing or if both are correct?

They are essentially the same thing. the H3O+ is just the H+ ion with a water molecule. But in the end, it is referring to the concentration of the H+ ions so both questions that you presented would be correct.

[605721741]

H+ is a short form way to write H30+. In reality a H3O+ complex forms as H+ merges with water.

[Joshua Lance Yumul 1F]

Yes, they are both correct!! pH=-log[H3O+] is the same as pH=-log[H+] (which is how Prof. explained it in class!. H3O+ is another way of saying the H+ is in an aqueous solution. good luck tomorrow :)

[Alyssa Cua 2J]

Hi Amy!
Yes, these are the same thing. When we are talking about acids we refer to them being in an aqueous solution. So, H+ will attach to H2O to form H3O+.

[Arpita Padhy 3E]

They're technically the same thing, so if you know either formula, you should be fine :)

[Mia Orr 3B]

Both equations mean essentially the same thing. H3O+ is just H+ in an aqueous solution bonded to H20, but both equations tell you the concentration of H+ ions!

[Amaris Cagungun 1F]

They are technically the same thing so wither equation you use should be fine. H3O+ usually describes H+ in aqueous solutions which it is usually found.

[Isabelle Kim 3E]

You're correct that these two are the same. This is due to the fact that you're taking the concentration of the same thing since hydronium ions are essentially the same thing as hydrogen atoms.

[Anna Guan]

H+ and H3O+ is the same thing, because the H+ donated by the acid usually combines with a water molecule to form H3O+

[Darlene Luu 1H]

Using the concentration of H+ and H30+ gives you the same pH. They are used interchangeably.

[Edmond Chu 1C]

They are the same thing. Hydronium ions form when a hydrogen atom bonds to water, creating H3O+. H+ and H3O+ are interchangeable.

[Natalie Quilala 1I]

This is essentially the same thing, as both are protonated and have the characteristic +1 charge.

[Nishan Reddy 3K]

These mean the same thing because usually the free H+ ions bond with water to make H3O+, but for simplicity, some choose to describe it as [H+] rather than [H3O+]. However, they mean the same thing.

[Marilyn]

They mean the same thing but I haven't encountered a question that uses H30+ instead of H+. Is there an example?