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Acids and Bases (weak or strong)

Posted: Thu Jan 24, 2019 9:45 pm
by Melissa Villanueva1K
How do we determine whether an acid or base is strong or weak? Thanks!

Re: Acids and Bases (weak or strong)

Posted: Thu Jan 24, 2019 9:54 pm
by tierra parker 1J
in terms of Ka values i think for weak acids the Ka value is very small compared to that of a strong acid but i dont know if that applies for weak bases

Re: Acids and Bases (weak or strong)

Posted: Thu Jan 24, 2019 9:55 pm
by Arman M 1A
You can determine whether an acid/base is strong or weak by solving for Ka and Kb. If Ka/Kb is larger than 10^-3, consider it to be strong. If it is less than 10^-3 consider it weak.

Re: Acids and Bases (weak or strong)

Posted: Thu Jan 24, 2019 9:59 pm
by Chem_Mod
It is more convenient to remember all the strong ones and the rest will be weak. See the following for strong acids and strong bases.
HI HBr HClO4 HCl HClO3 H2SO4 HNO3
NaOH KOH LiOH RbOH CsOH Ca(OH)2 Ba(OH)2 Sr(OH)2