pH

Philip
Posts: 100
Joined: Sat Sep 07, 2019 12:16 am

pH

How is the pH of a solution is related to its hydronium ion and hydroxide ion concentrations?

zfinn
Posts: 106
Joined: Fri Aug 30, 2019 12:16 am

Re: pH

The pH is the negative log of the solution's H3O+ concentration. The pOH would be the negative log of its OH- concentration, and this related to pH because pH = 14-pOH.

Jared_Yuge
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: pH

p just means -log of something, so for pH that something is the concentration of H+ or H3O+ and the pOH is substituting in the concentration of OH-

Amanda Mei 1B
Posts: 109
Joined: Sat Aug 24, 2019 12:16 am

Re: pH

The pH scale is based on the self-ionization of water, where two water molecules combine to form hydronium and hydroxide ions. pH is a measurement of how acidic a solution is. A higher concentration of the hydronium ion means the solution is acidic and will have a lower pH (below 7), while a higher concentration of the hydroxide ion means the solution is basic and will have a higher pH (above 7).

SVajragiri_1C
Posts: 115
Joined: Thu Jul 11, 2019 12:16 am

Re: pH

By definition the pH is the -log of the concentration of hydronium atoms. It is simply a mathematical representation of the hydronium ion concentration.
The pOH is the -log of the concentration of hydroxide ions.

Hussain Chharawalla 1G
Posts: 100
Joined: Sat Jul 20, 2019 12:15 am

Re: pH

The higher the H+ concentration, the higher the H3O+ concentration (they are the same thing H3O means reacted with water), which results in a lower pH. Same applies for OH.

ABombino_2J
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: pH

The higher the H3)+ concentration the lower the pH and the higher the pOH. The higher the OH- concentration the higher the pH and the lower the pOH.