Question

a)Calculate the pH of a weak base solution ([B]0 > 100 • Kb).

Close Problem Calculate the pH of a 0.289 M aqueous solution of triethanolamine (C6H15O3N, Kb = 5.8×10-7) and the equilibrium concentrations of the weak base and its conjugate acid.
pH =

[C6H15O3N]equilibrium = M

[C6H15O3NH+]equilibrium = M

b)

Calculate the pH of a 0.0338 M aqueous solution of dimethylamine ((CH₃)₂NH, K_b = 5.9×10^-4) and the equilibrium concentrations of the weak base and its conjugate acid.

pH	=
[(CH3)2NH]equilibrium	=	M
[(CH3)2NH2+ ]equilibrium	=	M

Answer 1

a) T 289 & (O. 289-1) (o,209-x,) iry 1 χ=o.oo o u oq Mこ[0Hコ-leys า =0,2, 8 8 5 M CH?), N H F.CHa)NH2 ,+ DH.- Ko T o.0332 kb o, o338-x on odu po":-log (он 2-38 ReH3)2NH] o, o378 _ o.oou 18