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This is the lab with my data sheet and please answer all of them. Thank you   My data to support answers for questions. The equilibrium is Fe3+ + SCN- <--> [FeSCN]2+. The Fe3+ is a pale yellow colour and the complex ion product is red. Stresses: Add KSCN - turned deep red Add Fe(NO3)3 - turned deep red Add Na2CO3 - turned yellow/colourless Add NaOH - turned yellow/colourless Add NH3 - turned yellow/colourless Heat - turned lighter orange colour Cold - turned darker orange colour What species is responsible for the observed colour change when KSCN(aq) and Fe(NO3)3(aq) are mixed?

This is the lab with my data sheet and please answer all of them. Thank you   My data to support answers for questions. The equilibrium is Fe3+ + SCN- <--> [FeSCN]2+. The Fe3+ is a pale yellow colour and the complex ion product is red. Stresses: Add KSCN - turned deep red Add Fe(NO3)3 - turned deep red Add Na2CO3 - turned yellow/colourless Add NaOH - turned yellow/colourless Add NH3 - turned yellow/colourless Heat - turned lighter orange colour Cold - turned darker orange colour What species is responsible for the observed colour change when KSCN(aq) and Fe(NO3)3(aq) are mixed?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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This is the lab with my data sheet and please answer all of them. Thank you

 

My data to support answers for questions.

The equilibrium is Fe3+ + SCN- <--> [FeSCN]2+. The Fe3+ is a pale yellow colour and the complex ion product is red.

Stresses:
Add KSCN - turned deep red
Add Fe(NO3)3 - turned deep red
Add Na2CO3 - turned yellow/colourless
Add NaOH - turned yellow/colourless
Add NH3 - turned yellow/colourless
Heat - turned lighter orange colour
Cold - turned darker orange colour

  • What species is responsible for the observed colour change when KSCN(aq) and Fe(NO3)3(aq) are mixed?
  • What can be concluded about the system based on your ~1 minute    observation of the mixture.
  • what does the addition of the solid do to the [SCN-(aq)]?
  • What can you infer about the system from the colour change of the solution?

  • How can this be possible if no additional Fe3+(aq) has been introduced?
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