As a result of the colour change, what can be concluded about the [FeSCN2+(aq)]? Explain. Explain why the addition of NH3(aq) affects the [FeSCN2+(aq)] as indicated in (a). Use chemical reaction in your explanation. Addition of heat/cold to test tube #7 & 8: As a result of the colour change, what can be concluded about the [FeSCN2+(aq)] when the temperature is increased? Explain.
This is the lab with my data sheet and please answer all of them. Thank you
and please answer all of them. If you do it would be appreciated
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
Addition of NH3(aq) to test tube #6:
As a result of the colour change, what can be concluded about the [FeSCN2+(aq)]? Explain.
Explain why the addition of NH3(aq) affects the [FeSCN2+(aq)] as indicated in (a). Use
Addition of heat/cold to test tube #7 & 8:
As a result of the colour change, what can be concluded about the [FeSCN2+(aq)] when the temperature is increased? Explain.
As a result of the colour change, what can be concluded about the [FeSCN2+(aq)] when the temperature is decreased? Explain.
What can you conclude about the reaction (i.e. is it endothermic or exothermic) based on the above results?
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