Question
Asked Nov 20, 2019
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4. A 0.010 M solution of AgNO3 is made 0.50 M in NH3 and Ag(NH3)2
complex forms
Ag(NH3)2*(aq) Kf = 1.7 x 107
Ag (aq) 2 NH3(aq)
a. What is the equilibrium concentration of Ag* in the solution?
b. What % of the total silver is in the form of Ag* (aq)?
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4. A 0.010 M solution of AgNO3 is made 0.50 M in NH3 and Ag(NH3)2 complex forms Ag(NH3)2*(aq) Kf = 1.7 x 107 Ag (aq) 2 NH3(aq) a. What is the equilibrium concentration of Ag* in the solution? b. What % of the total silver is in the form of Ag* (aq)?

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Expert Answer

Step 1

The balanced chemical equation is given below.

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Ag (aq)+2NH, (aq)Ag (NH, (aq

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Step 2

The equilibrium constant can be written as given below.

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(NH,), KL Ag ]NH, Ag

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Step 3

The ICE table can be set ...

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Concentration (M) Ag (aq) NH, (aq) Ag(NH), 3 3 Initial 0.50 0.010 Change -2x -X +X Equilibrium 0.010 x 0.50-2x х

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