Purpose of pH and pOH

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805601399
Posts: 100
Joined: Fri Sep 24, 2021 6:00 am

Purpose of pH and pOH

Postby 805601399 » Sun Dec 05, 2021 11:44 pm

What is the point of having two methods (pH and pOH) to calculate a solution's acidity or basicity?

905783577
Posts: 100
Joined: Fri Sep 24, 2021 7:34 am

Re: Purpose of pH and pOH

Postby 905783577 » Sun Dec 05, 2021 11:48 pm

It just depends on whether we want to view the acidity or basicity of a solution with respect to the concentration of H+ ions or OH- ions. So if you want to look at the concentration of OH-, pOH is more appropriate.

Ethan Wang 1L
Posts: 104
Joined: Fri Sep 24, 2021 6:34 am

Re: Purpose of pH and pOH

Postby Ethan Wang 1L » Tue Dec 07, 2021 12:08 am

It's mainly just because each takes measurements of different molecules (H+ and OH-, as stated above), since they ultimately are measuring the exact same thing (acidity and basicity), just on different scales.

Lily Rivas 1H
Posts: 50
Joined: Mon Jan 03, 2022 9:18 pm

Re: Purpose of pH and pOH

Postby Lily Rivas 1H » Fri Jan 21, 2022 10:33 pm

Look out for problems that give you pOH when needed to solve for pH or vice-versa. Like stated earlier, use what is appropriate for the given problem!

105707059
Posts: 101
Joined: Thu Sep 30, 2021 5:03 am

Re: Purpose of pH and pOH

Postby 105707059 » Sat Jan 22, 2022 3:33 pm

The purpose of pH and pOH is to measure the [H+] and [OH-] in a solution.

Fiona H 2E
Posts: 106
Joined: Fri Sep 24, 2021 5:26 am

Re: Purpose of pH and pOH

Postby Fiona H 2E » Sat Jan 22, 2022 3:43 pm

pH refers to the "potential of hydrogen." It can be used to determine whether a solution is acidic, basic, or neutral. pOH, on the other hand is a measure of hydroxide ion (OH-) concentration.

Evan L 2B
Posts: 101
Joined: Fri Sep 24, 2021 6:20 am

Re: Purpose of pH and pOH

Postby Evan L 2B » Sat Jan 22, 2022 7:05 pm

pH refers to the concentration of H3O+ ions and pOH refers to the concentration of OH- ions. We typically refer to pH just so that there is a standard, however, it is important to know/manipulate both because certain equations will require having the OH- concentration but you are only given the pH

Isabelle Rieke-Wey 2G
Posts: 100
Joined: Fri Sep 24, 2021 7:29 am

Re: Purpose of pH and pOH

Postby Isabelle Rieke-Wey 2G » Sat Jan 22, 2022 7:18 pm

Hi!
pH measures the concentration of H+ ions in a solution, while pOH measures the concentration of OH- ions in a solution.


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