1)silver nitrate is added to a solution of 1×10^-2M sodium acetate (Ksp AgC2H302

Question

1)silver nitrate is added to a solution of 1×10^-2M sodium acetate (Ksp AgC2H302=1.9×10^-3)

A)at what concentration of AG+ does a precipitate start to form?

B)what is the concentration of acetate ion in solution if [AG+]=.500M?

2)A precipitate of Pbl2 is formed when 5mL of 0.012M Pb (NO3)2 is added to 5 mL of .030M KI. it was found experimentally that the final concentration of I- in the 10mL solution after equilibrium was 8×10^-3M

A)how many moles of Pb2+ are originally present?

B)how many moles of I- are originally present?

C)how many moles of I- remained in solution after equilibrium?

D)how many mole of I- precipitated?

E)how many moles of PbI2 precipitate?

F)how many moles of PbI2 remain in solution after equilibrium?

G)what is [Pb2+] at equilinrium?

H)what is Ksp for the formation of PbI2?

Explanation / Answer

(1)

a)

Ksp = 1.9x10^-3=(1x10^-2)[Ag+]
[Ag+] = (1.9x10^-3)/(1x10^-2)
[Ag+] = 0.19 M

b) Ksp = 1.9x10^-3=(0.500)[acetate]
[acetate] = (1.9x10^-3)/(0.500)
[acetate] = 0.0038 M

Only one question should be answered according to chegg rules.Pls post other questions separately

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