pH formula?

[Saleha_Mian_3E]

What is the pH formula? and do we need to know how it was derived?

[Sierra Cheslick 2B]

The pH formula is -log[H+]. I believe we would need to know how to derive it.

[305127455]

I don't think we need to know how to derive it since pH is just an invented representation of proton concentration. For acid it's (-log[H+]), for base it's 14 - (-log[OH-])

[Jonathan Cheng 3C]

pH = - log[H+] while pOH is either 14 - pH or -log[OH-]. We do not need to know how these formulas were derived.

[Henri_de_Guzman_3L]

We don't need to know how they're derived although reading through the textbook I feel it is helpful in understanding how they work.

[Krista Mercado 1B]

The pH formula is pH = -log[H+]. I don't think we need to know how it is derived.

[Lisa Werner 2F]

I think you also need to know that pH + pOH = 14.

[Karina Koo 2H]

@305127455 wait shouldnt pOH be 14-(-log[H+]) ?

[NRodgers_1C]

Don't forget that because pH= -log[H3O+]= -log(1.0x10-7) = -(-7)=7 for a change in 1 pH unit, the [H3O+] changes by a factor of 10.

[gferg21]

The acid and base concentrations of the formula add up to 14, so there may be a pH of 8, which means there is a pOH of of 6

[MBouwman_4A]

The formula for pH is -log[H+] and pOH is -log[OH-]. I don't think we need to know the derivation, but it is helpful to know that pH + pOH = 14

[Callum Guo 1H]

pH=-log[h+]

[preyasikumar_2L]

You just need to know how to calculate pH and pOH from the [H+] and [OH-] given, and vice versa. pH = -log([H+]) and pOH = -log([OH-]) = 14 - pH

[Mitchell Koss 4G]

No you do not need to understand how logarithms are derived

[Juana Abana 1G]

so is it fine to just know the pH formula?

[Claire Grover 3G]

The formula is -log[H+] but I'm not sure if we need to know how to derive that.

[chrischyu4a]

pH=-log[H3O+]

[Callum Guo 1H]

it's -log[h+] and i doubt we would need to derive it

[AveryAgosto]

-log[H+] and I think we just need to know that pH+pOH= 14

[Annie Ye]

pH= -log(H+) you can also find pH from the equation 14= pOH+ pH if you were given the pOH.

[Natalie C 1K]

the pH is calculated using the formula: pH= -log[H3O+]

[Leyna Dang 2H]

You could find pH using pH=-log[H+]. Or, if you have the pOH, you could subtract it from 14 to find the pH.