Question

Please show all work and the answers...Thank you

1. A student mixes 5.00mL 2.00 x10^-3MFe(NO₃)₃ with 5.00 mL 2.00 x10^-3M KSCN. She finds that in the equilibrium mixturetheconcentration of FeSCN²⁺ is 1.40 x10^-4M.Find K_c for the reactionFe³⁺+SCN-↔FeSCN²⁺.

Step 1 : Find the number of molesFe³⁺and SCN^- initially present.

_______moles Fe3+ ; ____________molesSCN^-

Step 2: How many moles of FeSCN are in the mixtureatequilibrium? What is the volume of theequilibriummixture? __________mL; ____________molesFeSCN²⁺

How many moles of Fe³⁺ and SCN are used up inmakingthe FeSCN^2+?

_________moles Fe³⁺ ; __________molesSCN^-

Step 3 : How many moles of Fe³⁺ andSCN^-remain in the solution at equilibrium?

____________moles Fe³⁺ ;_____________SCN^-

Step 4 : What are the concentrations of Fe3+, SCN- andFeSCN2+at equilibrium? What is the volume of the equilibriummixture?

[Fe³⁺] = __________M ; [SCN^-]=______________ ; [FeSCN²⁺]=__________M

Step 5 What is the value of Kc for thereaction? Kc=_________