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Iron (III) ion and thiocyanate ion exists in equilibrium with iron thiocyanate ion. The reaction, as...

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Chemistry

Iron (III) ion and thiocyanate ion exists in equilibrium withiron thiocyanate ion. The reaction, as written, isexothermic. Given that theFeNCS2+
product is a deep red color and the reactants are nearly colorless,which of the following will cause the solution tobedarker in color at equilibrium?
Fe3+(aq) +NCS–(aq) ↔FeNCS2+(aq)

Increasing the solution temperature

Adding FeNO3

Removing Fe3+ ion by adding NaOH which reacts withFe3+ ion.

Removing NCS– ion by addingAgNO3 with reactacts withNCS– ion.

None of these

Answer & Explanation Solved by verified expert
4.5 Ratings (675 Votes)
1 The reaction is exothermic in nature so on increasing the temperature the equilibrium will shift in reverse directionaccording to Le Chatliers principleIn exothermic reaction the reactants are higher in energy than the products so raising temperature    See Answer
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