iron (lll) thiocyanate
- labperson
- Posts: 18
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- School: Cabramatta High School
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Iron(111)thiocyanate
Help
I need help to make the following chemicals. I cannot locate any recipes in any of my books
1) Fe(NO3) .....0.0020m
2)KSCN .........0.0020m
3)Fe(SCN)3 .......0.0002m
thanking you all in advance
I need help to make the following chemicals. I cannot locate any recipes in any of my books
1) Fe(NO3) .....0.0020m
2)KSCN .........0.0020m
3)Fe(SCN)3 .......0.0002m
thanking you all in advance
- Graham Kemp
- Posts: 173
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- School: St John's School
- Suburb: Roma
- State/Location: QLD
Re: Iron(111)thiocyanate
Ferric nitrate may be available in nonahydrate or anydrous form. Check on the lable.
* Fe(NO3)3.9H2O is 403.999 g/mol so 0.0020M will be 0.0808 g/100mL
* Fe(NO3)3 is 241.86 g/mol so 0.0020M will be 0.0484 g/100mL
Potassium Thiocyanate
* KSCN is 97.181 g/mol so 0.0020M will be 0.0194 g/100mL
Ferric Thiocyanate complex forms in the colourimetric determination reaction. You don't make your own.
* Fe(NO3)3 + 3 KSCN = Fe(SCN)3 + 3 KNO3
Suggestion: For the calibration plot, 0.10 mL increments of 0.00100 M KSCN are added to 4.00 mL of 0.200 M Fe(NO3)3, and for the equilibrium solutions, 0.50 mL increments of 0.00200 M KSCN are added to 4.00 mL of 0.00200 M Fe(NO3)3.
* Fe(NO3)3.9H2O is 403.999 g/mol so 0.0020M will be 0.0808 g/100mL
* Fe(NO3)3 is 241.86 g/mol so 0.0020M will be 0.0484 g/100mL
Potassium Thiocyanate
* KSCN is 97.181 g/mol so 0.0020M will be 0.0194 g/100mL
Ferric Thiocyanate complex forms in the colourimetric determination reaction. You don't make your own.
* Fe(NO3)3 + 3 KSCN = Fe(SCN)3 + 3 KNO3
Suggestion: For the calibration plot, 0.10 mL increments of 0.00100 M KSCN are added to 4.00 mL of 0.200 M Fe(NO3)3, and for the equilibrium solutions, 0.50 mL increments of 0.00200 M KSCN are added to 4.00 mL of 0.00200 M Fe(NO3)3.
- shellythenewlabby
- Posts: 53
- Joined: 01 Jul 2016, 12:17
- School: Woonona High School
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Re: Iron(111)thiocyanate
Hi
I use a website called Mass Molarity Calculator Sigma-Aldrich for when I have hard solutions to make. https://www.sigmaaldrich.com/chemistry/ ... lator.html
I just click on one of the links to work things out.
Hope this helps
I use a website called Mass Molarity Calculator Sigma-Aldrich for when I have hard solutions to make. https://www.sigmaaldrich.com/chemistry/ ... lator.html
I just click on one of the links to work things out.
Hope this helps
Re: Iron(111)thiocyanate
From the recipe section of Pearson Chem 12 to prepare 0.0002M iron(III) thiocyanate
pipette 10ml 0.002M KSCN into a 100ml volumetric flask
make up to 100ml with 0.002M Fe(NO3)3
make fresh as solution degrades
pipette 10ml 0.002M KSCN into a 100ml volumetric flask
make up to 100ml with 0.002M Fe(NO3)3
make fresh as solution degrades
Re: Iron(111)thiocyanate
This new year 12 Chemistry pracs are doing my head in, great to have a challenge, from chemicals kids aren't to use and shouldn't be using, to mind reading some of it.
NOW asking for 5 x 10-4molL-1 iron (III) thiocyanate = 0.0005m is that right? hate looking like an idiot! Practical investigation of an equilibrium system
Did every ones students have success with Determination of Keq by colorimetry
only a little rant.
NOW asking for 5 x 10-4molL-1 iron (III) thiocyanate = 0.0005m is that right? hate looking like an idiot! Practical investigation of an equilibrium system
Did every ones students have success with Determination of Keq by colorimetry
only a little rant.
- Kathryn
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Re: Iron(111)thiocyanate
Just finished this prac for this year. I know the iron thiocyanate has to be made fresh, but can the 0.002M KSCN and the 0.002M Fe(NO3)3 be kept until next year? ie: what is the shelf life for these solutions?
Thanks
Kathryn
Thanks
Kathryn
- fibreweb
- Posts: 620
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Re: Iron(111)thiocyanate
We just used the ones I mixed last year with great success
-
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Re: Iron(111)thiocyanate
My chem teacher got me to keep the solution from last year which he was happy to use this year. As far as I know, it all worked fine.
-
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Re: Iron(111)thiocyanate
Hi Kathryn,
Official shelf life doesn't always indicate loss of reactivity. I'm still using the same solutions three or four years later with good results.
Marama
Official shelf life doesn't always indicate loss of reactivity. I'm still using the same solutions three or four years later with good results.
Marama
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Re: Iron(111)thiocyanate
Hi Marama,
I prepared these solutions just yesterday just wondering did your chem teacher use a spectrometer to get the absorbance of the solutions and if yes,what type of results did you get?I think our Keq is a little out
Thanks Happy labby
I prepared these solutions just yesterday just wondering did your chem teacher use a spectrometer to get the absorbance of the solutions and if yes,what type of results did you get?I think our Keq is a little out
Thanks Happy labby
-
- Posts: 217
- Joined: 01 Aug 2017, 12:19
- Job Title: Laboratory technician
- School: College
- State/Location: NSW
Re: Iron(111)thiocyanate
Hi Happy Labby,
No, sorry, I can't help you with that. We didn't use a spectrometer.
Marama
No, sorry, I can't help you with that. We didn't use a spectrometer.
Marama
-
- Posts: 10
- Joined: 28 Jul 2015, 20:06
- State/Location: NSW
Re: Iron(111)thiocyanate
Hi Everyone,
Did anyone use a spectrometer to get the absorbance of the solutions? and if yes could they share the results with me
Many thanks
Happy Labby
Did anyone use a spectrometer to get the absorbance of the solutions? and if yes could they share the results with me
Many thanks
Happy Labby
- kimmy
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iron (iii) thiocyanate ion solution
can anyone tell me how to make this
iron (iii) thiocyanate ion solution
thank you in advance
iron (iii) thiocyanate ion solution
thank you in advance
- Labbie
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Re: Iron(111)thiocyanate
I have merged them for you Kimmy
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired![Love :wub:](./images/smilies/wub.gif)
Lab Manager/Lab Tech, mind reading etc etc
Now retired
![Love :wub:](./images/smilies/wub.gif)
iron (lll) thiocyanate
Hi All
Need help PLEASE
making iron (lll) thiocyanate
I have no idea
THANK YOU
Judy
Need help PLEASE
making iron (lll) thiocyanate
I have no idea
THANK YOU
Judy
Re: iron (lll) thiocyanate
Hi Judy.
Search iron thiocyanate in the search box above and you'll see previous discussions on this.
J
Search iron thiocyanate in the search box above and you'll see previous discussions on this.
J
- Labbie
- Posts: 3243
- Joined: 28 Nov 2006, 10:00
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Re: iron (lll) thiocyanate
Hope this helps Judy2018
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired![Love :wub:](./images/smilies/wub.gif)
Lab Manager/Lab Tech, mind reading etc etc
Now retired
![Love :wub:](./images/smilies/wub.gif)