What is concentration of Ag+ ion in a 1 L solution containing 0.02 mol
of agNO3 and 0.14 mol of NH3.

[Ag(NH3)2]+, Kinstab = 10^8

Options are:

A. 2 x 10^-7 (M)
B. 10^-8 (M)
C. 2 x 10^-8 (M)
D. 2 x 10^-9 (M)

Dear Student,

Volume of solution = 1l
​Moles of NH3 = 0.14
Moles of
[Ag(NH3)2]+ = 0.02
Concentration = moles/volume

Ksp = 10-8 M

[Ag(NH3)2]+ ⇔ Ag+   +2 NH3Ksp = [Ag+] [NH3]210-8 =Ag+0.14210-80.142 =Ag+Ag+ = 5.1×10-7

 


 

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