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QUESTION
What is [OH-] in a solution having a pH 9f 13.56?
##[OH^-]=0.32"mol/l"##
##pK_w=pOH+pH##
##:.14=pOH+13.5##
##:.pOH=14-13.5=0.5##
##:.-log[OH^-]=0.5##
##:.log[OH^-]=-0.5##
##10^(-0.5)=0.32##
##:.[OH^-]=0.32"mol/l"##
