Consider the following equilibrium: Fe3+(aq) + SCN–(aq) ⇌ Fe(SCN)2+(aq) In which direction will the equilibriumshift if: (a)FeCl3(aq) is added? (b)KSCN(aq) is added? (c)AgNO3(aq) is added? (Ag+ forms AgSCN ppt with SCN–) (d)NaOH(aq)is added? (Fe3+ forms Fe(OH)3 ppt with OH–)

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Consider the following equilibrium:

Fe3+(aq) + SCN(aq) ⇌ Fe(SCN)2+(aq)

In which direction will the equilibriumshift if:

(a)FeCl3(aq) is added?

(b)KSCN(aq) is added?

(c)AgNO3(aq) is added? (Ag+ forms AgSCN ppt with SCN)

(d)NaOH(aq)is added? (Fe3+ forms Fe(OH)3 ppt with OH)

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Le Chatelier's principle:

This principle is used to predict the effect of a change in conditions on chemical equilibrium. This principle states that when any system is at equilibrium and if we change in concentration, temperature, or pressure the system changes to a new equilibrium to cancel the change.

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