"Now the pOH is simple calculated by pKw- pH, where pKw is 14 at STP. If you have the hydroxide concentration, then you can express it in a logarithmic formula shown as. pOH = -log[ OH^- ]. Remember! [ OH^- ] * [ H^+ ] =1 x10^-14 is useful when figuring out unknown values."
One of my student looks at me all blanked eye. "I don't understand this at all."
"You should. I mean, after all it's just basic chemistry!"
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