Question

Hey! Can you please help me with the following two questions I am highly confused and I don't really understand them at all. Thank you!! 16, Please help me with them, we have a test this thursday and problems that are similar are supposed to be on there. Thank you so much!!!

1.Calculate the pH of a 0.119 M aqueous solution of hydroxylamine (NH₂OH, K_b = 9.1×10^-9) and the equilibrium concentrations of the weak base and its conjugate acid.

pH	=	______
[NH2OH]equilibrium	=	____ M
[NH3OH+]equilibrium	=	____M

2.Calculate the pH of a 0.0467 M aqueous solution of piperidine (C₅H₁₁N, K_b = 1.3×10^-3) and the equilibrium concentrations of the weak base and its conjugate acid.

pH	=	_____
[C5H11N]equilibrium	=	___M
[C5H11NH+ ]equilibrium	=	___M

Answer 1

- Он x th +х 1. NHOL + Ho NHOH Initial 0.119 Change Eguilibriumi 0.119-x {NP₂0HJ Con Kg [NHon] 22 Cho] → neglected because present in excess. χχχ 9.1 x 10-9 0.119-2 9.1 X10-9 x 22 is neglected) 0:1/9 - x 안 20 0.119 x 19:2X10-9) 1.0829 x 10-9 x2 -5 2= 3.3 X 10 ni fot So Port 3.3x105 - log (on tey (3.38109 10 -70.52 -5) - (lig 3.3 + ly = -0.52 +5 4.48 2

hthor = 14 PA 14- 4.48 9.52 ako ܒܢ (SH, NH tion GHN + Ho Initiall Change Equilibriumi 0.0467–2 0.0467 o -X +2 tc 22 Ko [CHI NHt] [oh (66 HN x 2 (x nelected) +3 x16-3 0.0467- रे 2 ad 0.06071 x 10 3.6.077x10-5 0.0078 z con 3 : K = 0.00 0.0078 Рон lag (or 0.0078 -t-2011) ley

Por = 11 p + Por 14 - 3.11 A 11 89 11