What must be the molarity of an aqueous solution of trimethylamine, (CH3)3N, if it has a pH = 11.12?
(CH3) 3N + H2O = (CH3) 3NH+ + OH-
Kb = 6.3 x 10-5

Question

Химия: What must be the molarity of an aqueous solution of trimethylamine, (CH3)3N, if it has a pH = 11.12?(CH3) 3N + H2O = (CH3) 3NH+ + OH-Kb = 6.3 x 10-5​

BlackJack11RUS · Answer

first find the poh value:poh=14-ph=14-11.2=2.8then we apply the following formula:poh=-lg(√Kb×c)2.8=-lg(√6.3×10^-5×C)C((ch3)3n)=0.04М...

What must be the molarity of an aqueous solution of trimethylamine, (CH3)3N, if it has a pH = 11.12?(CH3) 3N + H2O = (CH3) 3NH+ + OH-Kb = 6.3 x 10-5​

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What must be the molarity of an aqueous solution of trimethylamine, (CH3)3N, if it has a pH = 11.12?
(CH3) 3N + H2O = (CH3) 3NH+ + OH-
Kb = 6.3 x 10-5