pH v.pOH

[Tracy Tran 3L]

How are pH and pOH related? How do I solve one when given the other?

[Natalie Swerdlow 3K]

Calculating pH is done by taking the -log of the H3O+ concentration while the pOH is calculated by taking the -log of the OH- concentration. To find the other, subtract that number from 14. For example, if you solved for pOH, calculate 14-pOH to find pH.

[Kelly McFarlane]

pH + pOH = 14 so if you are given one you can easily solve for the other. If you are given the concentration of H+ or OH- instead you can use take the negative log in order to obtain the pH or pOH instead.

[gracebinder3I]

Hi!
pOH and pH are related because the sum of pOH (= -log[OH-] ) and pH (= -log[H+]) is equal to 14. They are also related because you can add the 10^-pH or 10^-pOH to get Kw=10^-14, which can give the relative concentrations of [H+] and [OH-].
I hope this helps!

[Mahika Saoji 3K]

Hi! As some background, pH + pOH = 14. The highest pH that can be attained is 14. If you are trying to find the pOH when given the pH, you just subtract from 14. This goes the same for if you are given pOH and are trying to find the pH. If you are given the [H+] or [OH-] concentration, you plug the corresponding concentration into these equations: pH=-log[H+] or pOH=-log[OH-]. Once you have your pH or pOH value, you subtract it from 14 to find what you are looking for (pH or pOH). I hope that helped!

[Ishpreet Kaur 3C]

pH and pOH are inversely related. As pH goes up, pOH goes down and vice versa. pH+pOH=14 is the most direct equation but since pH is just the -log[H+] and pOH is just the -log[OH-] you can also use the equation [H+][OH-]=10^-14.

[Vashe Sundar 3H]

The sum of pH and pOH is 14. While pH is the measure of [H+], pOH is the measure of [OH-]. As long as you have one of the molarities or pOH/pH, you should be able to calculate the rest.

[Macy_Anderson_2F]

The sum of pH and pOH is equal to 14, meaning they are inversely related. If you are able to calculate the pH or the pH of a molecule you can determine the other via simple subtraction.

[Amanda Tran 1D]

pH + pOH = 14, so if given pH, you can subtract the value of pH from 14 to find pOH and vice versa.

[Natasha]

The pH and pOH are inversely related and they are equal to 14. The way to figure out pH if given pOH is to subtract pOH from 14.

[Samantha Quevedo 2L]

Hello!
pH and pOH are inversely related and pH + pOH = 14. Also you can find the pH when you take the -log of [H3O+] ion concentration and you can find the pOH when you take the -log of [OH-] ion concentration.

[amar_151]

To understand why the two are inversely proportional, remember that if you have a high concentration of hydronium atoms, you have an acidic solution. Therefore, you will have a low concentration of hydroxide.

[amar_151]

To understand why the two are inversely proportional, remember that if you have a high concentration of hydronium atoms, you have an acidic solution. Therefore, you will have a low concentration of hydroxide.

[Isabelle Kludt 2B]

pOH + pH = 14 so you can find either if you are given one of them.

[Bobak Pourrahimi 2L]

pH is a value that represents acidity of a substance based on the concentration of H+, whereas pOH represents how basic a substance is based on the concentration of OH-. However, in a substance, pH and pOH added together should always be equal to 14.

[Alyssa Gutierrez 3A]

The key difference between pH and pOH is that pH is a measure of hydrogen ions whereas pOH is a measure of hydroxide ions.
pH = −log10 [H+]
pH = −log10 [OH–]

[Omar Alkhalili 1J]

Hello! pH + pOH = 14, so when one value is higher, the other value will be lower.

[LillianHarvey2C]

There were about three or four questions about pH on the test, hopefully you felt confident enough answering them:)

[Ashley Fakolujo 3H]

Calculating pH is done by taking the -log of the H3O+ concentration while the pOH is calculated by taking the -log of the OH- concentration. To find the other, subtract that number from 14. For example, if you solved for pOH, calculate 14-pOH to find pH.

I thought it was -log[H+]?

[Sally_Luo_3F]

Their relationship is inversely proportional. If we look at the formula 14=pH + pOH, then we will notice that when pH increases pOH will decrease. They have a equilibrium point at 7 when ph=7 and pOH=7

[14b_student 2E]

There are a couple good practice problems on the homework for pH vs pOH.

[Ashrita Singh 2F]

pH=14-pOH and pOH=14-pH

[Maddie Klee 3K]

pH + pOH = 14
When given pH, you can calculate pOH by subtracting the pH from 14.
14-pH = OH
14-pOH = pH

[Hope Galarneau 1A]

pH and pOH are related because when added together, they sum up to 14. Thus if you have one, you can always find the other by subtracting the one you have from 14. Hope this helps!

[Miranda Hess 3I]

You can think of it as pH being one side of the seesaw and pOH is the other- when pH is high, pOH is low and vice versa. To calculate it, you can just remember pOH + pH = 14, but it also helps to remember their relationship. This also helps with calculating [H+] and [OH-] concentrations.

[Daniela G 2C]

pH and pOH are both used to express the acidity of a solution. pH = -log [H+] while pOH = -log{OH-]. When given either pH or pOH, you subtract whichever term is given by 14 to find the remaining term.
pOH + pH = 14.

[Kristen Bansil 1G]

For calculating both pH or pOH, I use the following formulas:
pH = 14-pOH = -log[H+]
pOH = 14-pH = -log[OH-]

A key thing to remember is that these two concepts are inversely related, hope this helps goodluck!

[305824279]

the values of pH and pOH should add up to 14, therefore you can find either pH or pOH by subtracting the given value from 14.

[Tristan Friet 3G]

pH + pOH = 14. Therefore, to find pH subtract the pOH from 14, and to find the pOH subtract the pH from 14.

[AndreyCastellanos 3H]

pH = 14-pOH = -log[H+]
pOH = 14-pH = -log[OH-]

[Mahli Martinez 2I]

Remember that the values of pH and pOH added together equal to 14! Using that and the formulas Lavelle provided, these calculations are fairly simple. Say for example, a problem states that the pH of a solution is equal to 2.9 and it wants the pOH, all you have to do is subtract the pH value from 14, and there you have the pOH! (11.1 in this example I provided).

[Chelsea Greene 1L]

If you have one, you can find the other by doing 14- pH/pOH.

[Alice Weber 3I]

pH + pOH = 14. Therefore if you find pH or pOH, you can just put the value into the equation and solve for the other.

[Yalit Gonzalez 1A]

pH+pOH=14
pH=-log([H3O+])
pOH=-log([OH-])

[Abigail Tran 14a]

pH and pOH are related because they add up to 14

[Abigail Tran 14a]

pH and pOH are related because they add up to 14

[Crystal Ma 2J]

pH+pOH=14 so to get one from the other, just subtract either pH from 14 or pOH from 14

[Rebekah Jung 1C]

pH and pOH add up to 14. You can also use the relationship between the following equations to calculate differnt values: -log[H3O+]= pH, -log[OH-] = pOH, [H3O+]= 10^-pH, and [OH-]=10^-pOH.

[Amanda Pineda 3H]

pH+pOH=14 always. So as pH goes up, pOH goes down and vice versa. pH measures the concentration of H+ and pOH measures the concentration of OH-. Hope this helps!

[BriannaDis2C]

Hello, pH plus pOH equals 14 therefore, if you are know one of the values, you can easily calculate the other.

[405479701]

pH plus pOH equals 14 so you can use one to find the other.