The equilibrium constant for the ion-pairing reaction Mg2*(aq) + So (aq) = MgSO,(aq) is Kjon pair= 1.70 x 102. Consider a 0.0270 F solution of MgSo̟. Neglecting other reactions except the autoionization of water, what is the charge balance equation for this solution? O [Mg²+1 = [SO;] O 2 ĮMg24) = 2[SO; O [Mg2+1 + [H*] = [So]+[OH¯] O 2 [Mg2+] + [H*] = 2[SO+ [OH¯] %3D
The equilibrium constant for the ion-pairing reaction Mg2*(aq) + So (aq) = MgSO,(aq) is Kjon pair= 1.70 x 102. Consider a 0.0270 F solution of MgSo̟. Neglecting other reactions except the autoionization of water, what is the charge balance equation for this solution? O [Mg²+1 = [SO;] O 2 ĮMg24) = 2[SO; O [Mg2+1 + [H*] = [So]+[OH¯] O 2 [Mg2+] + [H*] = 2[SO+ [OH¯] %3D
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter21: The Chemistry Of The Main Group Elements
Section: Chapter Questions
Problem 128SCQ
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![The equilibrium constant for the ion-pairing reaction
Mg2+(aq) + SO (aq) = MgSO4(aq)
is Kjon pair= 1.70 x 102. Consider a 0.0270 F solution of MgSO.
Neglecting other reactions except the autoionization of water, what is the charge balance equation for this solution?
O [Mg2+1 = [So?
O 2 [Mg2+] = 2[SO?I
O [Mg2+1 + [H*] = [So+ [OH]
O 2 [Mg2+] + [H*)] = 2 [SO]+ [OH)
Considering only the ion-pairing reaction and the autoionization of water, what are the mass balance equations for
this solution?
O 0.0270 M = [Mg?+1
0.0270 M = [SO7+ [M9SO,]
O 0.0270 M = [So
V 0.0270 M = [Mg²+] + [MgS0,]
What is the equilibrium constant expression for the ion-pairing reaction?
Kjon pair=
[M9SO4]YM8SQ
Kjon pair= [Mg**l/Mg+-ISO TYsq-
1
Kjon pair=
[Mg2*lYMg+[SO TYsg-](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c16a60b-3791-4b80-8b93-7328261ba4df%2F2fde5746-20a5-41a6-8843-487f6d8f4c98%2Fo0hgp3n_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The equilibrium constant for the ion-pairing reaction
Mg2+(aq) + SO (aq) = MgSO4(aq)
is Kjon pair= 1.70 x 102. Consider a 0.0270 F solution of MgSO.
Neglecting other reactions except the autoionization of water, what is the charge balance equation for this solution?
O [Mg2+1 = [So?
O 2 [Mg2+] = 2[SO?I
O [Mg2+1 + [H*] = [So+ [OH]
O 2 [Mg2+] + [H*)] = 2 [SO]+ [OH)
Considering only the ion-pairing reaction and the autoionization of water, what are the mass balance equations for
this solution?
O 0.0270 M = [Mg?+1
0.0270 M = [SO7+ [M9SO,]
O 0.0270 M = [So
V 0.0270 M = [Mg²+] + [MgS0,]
What is the equilibrium constant expression for the ion-pairing reaction?
Kjon pair=
[M9SO4]YM8SQ
Kjon pair= [Mg**l/Mg+-ISO TYsq-
1
Kjon pair=
[Mg2*lYMg+[SO TYsg-
![1
Kjon pair=
[M|SO41YM8SQ
Kjon pair=
Including the equilibrium-constant expression for the autoionization of water, there are now have five equations and five
unknowns. Using these five equations and neglecting activity coefficients, find the concentration of Mg²+ in solution.
[Mg2+] =
M
Incorrect
Using the calculated [Mg2+] as a starting point, calculate the ionic strength of the solution. Look up the activity coefficients
for Mg+ and So in this table, interpolating as necessary, and then calculate the concentration of Mg²+ in solution using
activity coefficients. The activity coefficient of the ion pair (7M9SQ) can be taken as unity (1) because the ion pair is neutral.
Repeat this procedure one more time to get a good estimate of Mg2+. What is the concentration of Mg2+ when activity
coefficients are used?
[Mg?41 =
Incorrect
What percentage of this solution is ion paired?
percentage ion paired:
%
Incorrect
What is the ionic strength of this solution?
M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c16a60b-3791-4b80-8b93-7328261ba4df%2F2fde5746-20a5-41a6-8843-487f6d8f4c98%2Fq55ov86_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1
Kjon pair=
[M|SO41YM8SQ
Kjon pair=
Including the equilibrium-constant expression for the autoionization of water, there are now have five equations and five
unknowns. Using these five equations and neglecting activity coefficients, find the concentration of Mg²+ in solution.
[Mg2+] =
M
Incorrect
Using the calculated [Mg2+] as a starting point, calculate the ionic strength of the solution. Look up the activity coefficients
for Mg+ and So in this table, interpolating as necessary, and then calculate the concentration of Mg²+ in solution using
activity coefficients. The activity coefficient of the ion pair (7M9SQ) can be taken as unity (1) because the ion pair is neutral.
Repeat this procedure one more time to get a good estimate of Mg2+. What is the concentration of Mg2+ when activity
coefficients are used?
[Mg?41 =
Incorrect
What percentage of this solution is ion paired?
percentage ion paired:
%
Incorrect
What is the ionic strength of this solution?
M
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