Answer to Question #173989 in General Chemistry for sdfa

Question #173989

Find the Reaction Equation:




Adding NH4SCN

Adding AgNO3

Increasing Temperature

Decreasing Temperature

Moving tube 4 to hot water

Moving tube 5 to ice water

 

In this experiment, iron (III) (Fe3+) reacts with thiocyanate ion (SCN-) to form the deep red complex ion, FeSCN2+. The intensity of red color tells if [FeSCN2+] changes.

You will make three changes to this equilibrium system:

  • Adding solid ammonium thiocyanate (NH4SCN). NH4SCN is a soluble solid which will dissociate in water to form NH4+ ions and SCN- ions.
  • Adding silver nitrate (AgNO3) which removes SCN- ions from the equilibrium system by forming an insoluble white precipitate.
  • Heating and cooling the system.





1
Expert's answer
2021-03-24T01:08:51-0400

Adding NH4SCN => right


Adding AgNO3=> left


Increasing Temperature=> right


Decreasing Temperature=> right




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