Calculate K for each salt in an aqueous solution at 25 °C in which u = 0.0100 M. Use the table of Kp values and a table of activity coefficients to solve this problem. KIO4 Kp = 0.000459 Y(I0,), Kp = 2.30 x10-11
Calculate K for each salt in an aqueous solution at 25 °C in which u = 0.0100 M. Use the table of Kp values and a table of activity coefficients to solve this problem. KIO4 Kp = 0.000459 Y(I0,), Kp = 2.30 x10-11
Chapter10: Effect Of Electrolytes On Chemical Equilibria
Section: Chapter Questions
Problem 10.16QAP
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Transcribed Image Text:Calculate K for each salt in an aqueous solution at 25 °C in
which µ = 0.0100 M. Use the table of Kp values and a table
of activity coefficients to solve this problem.
Compound
Formula
Ва, (РО,), 3.40 х10-23
cobalt(II) phosphate Co,(PO), 2.05 × 10-35
La(IO,), 7.50 x 10-12
barium phosphate
lanthanum iodate
magnesium phosphate |Mg,(PO,), |1.04 × 10–24
3.71 x 10-4
0.000459
KIO,
potassium periodate
KIO,
scandium hydroxide Sc(OH), 2.22 × 10–31
AgSCN 1.03 x 10-12
Y(10,), 1.12 x 10¬10
1.46 x 10-10
silver thiocyanate
yttrium iodate
Y(I0;)3
K =
2.30 x10-11
zinc carbonate
ZNCO,
Ba,(PO,),
K, =
2.03 x10-23
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Transcribed Image Text:for Aqueous Solutions at 25C
Ion
size
(a pm)
Ionic Strength( p M)
Ion
0.001
0.005
0.01
0,05
0.1
Charge= +/-1
Activity coefficient (y)
H+
900
0.967
0.933
0.914
0.86
0.83
(C6H5)2CHCO2 , (C3H7)4N*
(O2N)3C6H2O¯(C3H7)NH* CH3O6H4CO2-
800
0.966
0.931
0.912
0.85
0.82
700
0.965
0.930
0.909
0.845
0.81
Li* C6H5CO2", HOC,H4CO2-, CIC6H4CO2-, C6H5CH2CO2,
CH2=CHCH2CO2-(CH3)2CHCH2CO2-, (CH3CH2)4N4.
(C3H7)2NH2+
600
0.965
0.929
0.907
0.835
0.80
C2CHCO2 , CI3CCO2, (CH3CH2)3NH*, (C3H7)NH3*
Na", CdCI*, CIO2 , 103", HCO3 , H2PO4 , HSO3", H2ASO4",
Co(NH3)4(NO2)2*, CH3CO2", CICH2CO2 (CH3)4N",
(CH3CH2)2NH2*, H2NCH2CO2"
H3NCH2CO2H,(CH3)3NH4, CH3CH2NH3*
500
0.964
0.928
0.904
0.83
0.79
450
0.964
0.928
0.902
0.82
0.775
400
0.964
0.927
0.901
0.815
0.77
OH,F, SCN, OCN", HS", CIO3, CIO4", BrO3, 104, Mn04",
350
0.964
0.926
0.900
0.81
0.76
HCO2, H2citrate", CH3NH3*, (CH3))2NH2*
K*, cr", Br",T', CN", NO2", NO3
Rb*, Cs*, NH4+, TI*, Ag*
300
0.964
0.925
0.899
0.805
0.755
250
0.964
0.924
0.898
0.80
0.75
Charge= +/-2
Activity coefficient (y)
Mg+, Be2+
CH2(CH2CH2CO22, (CH2CH2CH2CO2-)2
Ca2+ Cu²+¸ Zn²+, Sn²+, Mn²+, Fe+2,Ni²+, Co+2.C6H4(CO2)2.
800
0.872
0.755
0.69
0.52
0.45
700
0.872
0.755
0.685
0.50
0.425
600
0.870
0.749
0.675
0.485
0.405
H2C(CH2CO2)2, (CH2CH2CO2")2
s2+, Ba2+, Ca²+, Hg²+, s² ,s204²", wo4²", H2C(CO2^)2,
500
0.868
0.744
0.67
0.465
0.38
(CH2CO2)2, (CHOHCO2)2
Pb 2+ .Co 3²- ,so 3²- , MoO 4²- , Co(NH 3 ) 5 CI 2+ . Fe(CN) 5
NO 2- ,C204² , Hcitrate 2-
Hg22+, so,?", s203²,S206²,, s20g², SeO4², C.o,², HPO4²-
450
0.867
0.742
0.665
0.455
0.37
400
0.867
0.740
0.660
0.445
0.355
Charge= +/- 3
AI3+, Fe3+¸ Cr3+, Sc³+, y3+¸ In³+, lanthanides“
Activity coefficient (y)
900
0.738
0.54
0.445
0.245
0.18
citrate3
500
0.728
0.51
0.405
0.18
0.115
PO4, Fe(CN),, Cr(NH3)6*+, Co(NH3)6*+, Co(NH3)5H20³+
400
0.725
0.505
0.395
0.16
0.095
Charge =+/-4
Activity coefficient (y)
Th4+,z4+ Ce4+, Sn+
1100
0.588
0.35
0.255
0.10
0.065
Fe(CN),4
500
0.57
0.31
0.20
0.048
0.021
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