Part A Fe(NO3)3 s added? O increases the equilibrium concentration of FeCl O dec

Question

Part A Fe(NO3)3 s added? O increases the equilibrium concentration of FeCl O decreases the equilibrium concentration of FeCl 2+ O does not change the equilibrium concentration of FeCl2+ Submit My Answers Give Up Part B Cl is precipitated by addition of AgNO3? O increases the equilibrium concentration of FeCl 2+ O decreases the equilibrium concentration of FeCl O does not change the equilibrium concentration of FeCl 2+ Submit My Answers Give Up Part C The temperature is increased? O increases the equilibrium concentration of FeCl 2+ O decreases the equilibrium concentration of FeCl 2+ 2+ O does not change the equilibrium concentration of FeCl Submit My Answers Give Up

Explanation / Answer

Fe3+ (aq) + Cl-(aq) <--------> [ FeCl]2+ (aq)

Equilibrium constant ,K = [[ FeCl]2+]/[ Fe3+ ] [ Cl- ]

PartA

When Fe(NO3)3 is added , [ Fe3+ ] increases.If [ Fe3+ ] increases ,[ [FeCl]2+] should increase so that the equilibrium constant will be maintained

So , the answer is increase the equilibrium concentration of FeCl2+

Part B

When Cl- is precipitated by addition of AgNO3, [ Cl-] will decreases and [FeCl2+] decrease to maintain equilibrium constant

So, the answer is decreases the equilibrium concentration of FeCl2+

PartC

Endothermic reaction means ,the reaction will take heat from surrounding. So, When temperature increases, it will be used up by the reaction and the will proceed forward

So, the answer is increase the equilibrium concentration of FeCl2+

PartD

When a catalyst is added , it reduce the activation energy needed to the reaction and speed up the reaction,but it will not alter the equilibrium constant.

So, the answer is does not change the equilibrium concentration of FeCl2+

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