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Equal volumes of 0.00150M FeCl3 and 0.00200M NaSCN were mixed together and reacted according to the equation:

Fe3+ + SCN- <--> FeSCN2+

The equilibrium concentration of FeSCN 2+ was 1.40 x 10^-4 M

Calclulate the equilibrium constant for the reaction.

I got that right? or do you have to use the "equal volumes" part of the question in some way?

  • chemistry -

    I think you must do an ICE chart and half the concentrations of Fe^+3 and SCN^- to start.

  • chemistry -

    thanx..other people were saying that as well

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