Two-parter. Thank you in advance  a) A student working in the laboratory prepared the following reactants: 5 mL of 0.008M Cd2+(aq) 10 mL of 0.008M SCN-(aq) 10 mL of 0.7M HNO3(aq) These reagents were mixed and allowed to stand for 10 minutes. The concentration of Cd(SCN)+ in the resulting equilibrium mixture is found to be 5 x 10−4M. Calculate the initial concentration of Cd2+(aq).   b) Calculate the Keq for the reaction mixture.

Chemistry & Chemical Reactivity
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ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter15: Principles Of Chemical Reactivity: Equilibria
Section15.6: Disturbing A Chemical Equilibrium
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Two-parter. Thank you in advance 

a) A student working in the laboratory prepared the following reactants:

5 mL of 0.008M Cd2+(aq)

10 mL of 0.008M SCN-(aq)

10 mL of 0.7M HNO3(aq)

These reagents were mixed and allowed to stand for 10 minutes. The concentration of Cd(SCN)+ in the resulting equilibrium mixture is found to be 5 x 10−4M. Calculate the initial concentration of Cd2+(aq).

 

b) Calculate the Keq for the reaction mixture.

 

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