Answer to Question #109365 in General Chemistry for mya 9

General Chemistry

Question #109365

Determine the [OH−] , pH, and pOH of a solution with a [H+] of 4.0×10−11 M at 25 °C.

Expert's answer

K_w= [H⁺][OH^-] = 1*10^-14

"pH = -lg[H^+]=-log_{10}(4*10^{-11})=10.4"

"pOH = 14-pH = 3.6"

"[OH^-]=10^{-pOH}=0.00025=2.5*10^{-4}"

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