QUESTION 6 What is the concentration of silver ion in a saturated solution of silver carbonate...

Question

Question

science chemistry

Answer 1

Answer #1

Na2CO3 here is Strong electrolyte

It will dissociate completely to give [CO32-] = 0.0044 M

At equilibrium:

Ag2CO3 <----> 2 Ag+ + CO32-

2s 4.4*10^-3 + s

Ksp = [Ag+]^2[CO32-]

8.6*10^-12=(2s)^2*(4.4*10^-3+ s)

Since Ksp is small, s can be ignored as compared to 4.4*10^-3

Above expression thus becomes:

8.6*10^-12=(2s)^2*(4.4*10^-3)

8.6*10^-12= 4(s)^2 * 4.4*10^-3

s = 2.211*10^-5 M

So,

[Ag+] = 2s

= 2*2.211*10^-5 M

= 4.422*10^-5 M

Answer: e

Answer 2

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