little a meaning

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Emily Vainberg 1D
Posts: 102
Joined: Sat Jul 20, 2019 12:15 am

little a meaning

Postby Emily Vainberg 1D » Mon Dec 02, 2019 4:26 pm

what does the little a represent in the log function?

Example: pOH= -log a (OH-)
then the a is transformed into brackets making it: [OH-]
does 'a' just mean concentration?

Brian_Ho_2B
Posts: 221
Joined: Fri Aug 09, 2019 12:16 am

Re: little a meaning

Postby Brian_Ho_2B » Mon Dec 02, 2019 4:30 pm

I don't recall any "little a" in the log equation for pKa or pH or pOH; the "a" may be referring to "acid" but in each of the equations for pKa, pH, pOH, the equation is the same: p(something) = - log(something), where the log is base 10. Might be some Mandela Effect going on but I can't remember a little "a" in the equations.

Ryan Yee 1J
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

Re: little a meaning

Postby Ryan Yee 1J » Mon Dec 02, 2019 6:52 pm

I don't recall a little 'a' in that equation. pOH = -log[OH-] and pH = -log[H3O+]. You could have miswritten the equation, or gotten it confused with Ka or pKa (in which pKa = -log(Ka) so maybe thats what happened?)


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