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Negative pH

Posted: Thu Jan 16, 2020 5:28 pm
by 805312064
Can a pH be 0 or negative? If so, what would that mean?

Re: Negative pH

Posted: Thu Jan 16, 2020 5:51 pm
by Vincent Leong 2B
Yes, a pH can be below 0. This just tells us that the molarity of hydrogen ions is greater than 1. Theoretically it is possible but in a lab, that can rarely be observed.

Re: Negative pH

Posted: Thu Jan 16, 2020 5:53 pm
by Connor Chappell 2B
The conventional scale of ph being between 0 and 14 is dewrvied from reactions with water at room temperature.

Re: Negative pH

Posted: Thu Jan 16, 2020 5:53 pm
by Diana_Diep2I
You get a negative pH when the concentration provided is greater than 1

Re: Negative pH

Posted: Thu Jan 16, 2020 6:07 pm
by EvanWang
Yes, pH can be negative and it just means that the molarity of H+ is greater than 1. Google tells me that some acids have been observed at pH -18.

Re: Negative pH

Posted: Thu Jan 16, 2020 6:25 pm
by Sarah Zhari 1D
You can definitely have an acid with a negative pH, although this would be very rare. Additionally, very strong bases can also have a pH of more than 14.

Re: Negative pH

Posted: Thu Jan 16, 2020 6:31 pm
by Hailey Kim 4G
If a pH is less than 0 or greater than 14, that means the concentrations of H30+ or OH- are larger than one molar. However, the concentration of hydrogen ions are usually between 1 M or 10^-14 M.