A 0.100 M KCl solution is placed in contact with a 0.100M LiCl solution. which o

ID: 990725 • Letter: A

Question

A 0.100 M KCl solution is placed in contact with a 0.100M LiCl solution. which of the following is true for junction between the solutions?

a. HCl side of the junction will be positive as Cl- diffuse faster across the junction than K+

b. LiCl side of the junction will be negative as Li+ diffuse faster across the junction than K+

c. the KCl side of the junction will be positive as K+ diffuse slower across the junction than Li+

d. the LiCl side of the junction will be more negative as Li+ diffuse faster across the junction than Cl-

a. KCl side of the junction will be positive as Cl- diffuse faster across the junction than K+(true)

Both sides have Cl- ion ,so net Cl- movement is zero.As K+ also diffuse at a faster rate compared

[diffusion coefficient of Cl-=2.03, diffusion coefficient of K+=1.96]

b. LiCl side of the junction will be negative as Li+ diffuse faster across the junction than K+(false)

[diffusion coefficient of Li+=1.03, diffusion coefficient of K+=1.96]

c. the KCl side of the junction will be positive as K+ diffuse slower across the junction than Li+(false)

[diffusion coefficient of Li+=1.03, diffusion coefficient of K+=1.96]

d. the LiCl side of the junction will be more negative as Li+ diffuse faster across the junction than Cl-(false)

[diffusion coefficient of Li+=1.03, diffusion coefficient of Cl-=2.03]

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