Question

What is the activity coefficient for each ion at the given ionic strength at 25 °C? Activity coefficients at various ionic strengths can be found in this table. Hgzł (u = 0.1M) y = Y3+ (u = 0.001 M) y = Pr3+ (u = 0.01 M) y = (CH, CH2)2NH+ (u = 0.01 M) y =

Answer 1

Activity co-efficient was usually calculated by using Debye - Huckel limiting law

Debye Hackel limhag las Con be colaulat law ofo Achvily Debye -Huckel limhng an lm Y2 12AT Rn V soluhons at where A- 1.1 25°C

of charge I lonie shoeng te y achvihy to-efheent Lonic shength Can he colaulatk by lanic the aahn ncenhahon of aoch lors in Libse males peo of lon スィ→ chorge 21 CHFO.IM) DHg 2 lonic shreng th, T-EM

Co.1x2 Achi toelh cent, O.2 -1e142 Y2 - 12 x IxCo. a) Y ー104子3子4aれ0チ Cx) e Y nti n -C1.047374an0 e Thus O.35 2t O,35 3 t CH0, 00 | m I m 2 lonc sheng th

-0.0045 Ac hvihy coeffieiet, -2,2|A 131K1-171.004CS 0.235659204 anti In-0.235s920 = 0.79 2t P (H0.0im)- = O.045 as refheant Achviby

X stogx IIS - - O,745198367 3 t O.H15 Co.01X1 -01005 - x11x(0.Dos = 0.0880 ddo O.930 NH