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A student working in the laboratory prepared the following reactants: 5 mL of 0.007M Cd2+(aq) 10...

A student working in the laboratory prepared the following reactants:

5 mL of 0.007M Cd2+(aq)

10 mL of 0.005M SCN-(aq)

10 mL of 0.9M 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).

Calculate the initial concentration of SCN-(aq).

Calculate the equilibrium concentration of Cd2+(aq).
Calculate the equilibrium concentration of SCN-(aq).

Calculate the Keq for the reaction mixture

.

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Answer #1

Initial conc. of Cd²+ = no. of millimoles Total volume in ml 0.007 X5 kmol 25 whL 10.0014 M & Initial conc. of SCN - = 0.005

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