thesmug
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Hexaaminenickel(II) Chloride Concentration
I just got my Nickel(II) Chloride in the mail after weeks of waiting and was going to make some Hexaaminenickel(II) Chloride (via this method) but I completely forgot what concentration of Nickel(II) Chloride solution to use. Does anybody here know what concentration to use?
Here's the reaction equation:
[Ni(H2O)6]Cl2 + 6NH3 == [Ni(NH3)6]Cl2 + 6H2O
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Brain&Force
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Any sufficiently large concentration will do; the important thing is to have your ammonia quite concentrated.
I have another question, can a neutral tetraammine complex be isolated?
At the end of the day, simulating atoms doesn't beat working with the real things...
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DraconicAcid
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I'm not sure- the hexammine is much lower in solubility, so it's easy to isolate.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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packetforger
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I have a writeup (or three) on this available, links below. Can import into thread if needed. It is my first posting here, so unsure if it is
acceptable to simply post links to writeup or if I should import the pictures/data.
Preparing the hexamminenickel(ii) chloride
http://packetforger.wordpress.com/2013/09/25/preparation-of-...
And some fun analysis of the reaction product (good for determining how effective your reaction was, etc).
Determining percentage Ammonia in product
http://packetforger.wordpress.com/2013/10/05/determining-per...
Determining amount of Nickel in product
http://packetforger.wordpress.com/2013/09/27/determining-the...
I cannot comment on tetrammine variant as have not looked into it,I can always ask my lab supervisor sometime though.
[Edited on 21-2-2014 by packetforger]
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thesmug
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That was a very interesting read. I forgot to ask earlier, would it be necessary to do this reaction outside or in a fume hood for any reason other
than the bad smell given by ammonia?
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DraconicAcid
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You want concentrated ammonia, the smell of which is not merely bad, but overpowering.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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thesmug
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Would 30% pose any respiratory harm?
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Metacelsus
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It definitely could if you breathed the concentrated fumes for too long. However, with good ventilation it will not be much of a threat.
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thesmug
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Quote: Originally posted by Cheddite Cheese  | | It definitely could if you breathed the concentrated fumes for too long. However, with good ventilation it will not be much of a threat.
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I actually finished the reaction a few hours ago. It doesn't seem to have done any harm.
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packetforger
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I did the ammonia bits inside the fumehood, but that was mainly because of supervisors instructions, etc. Filtration and washing was done outside of a
fumehood.
I find the smell of ammonia not so bad, and certainly not something that would unduly worry me regarding fumes on this small a scale, but some people
seem extra sensitive to it. I would, however, do it outside or in a well ventilated area.
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MrHomeScientist
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It's been a while since I recorded that, but if I remember right none of the smells in this experiment were too overpowering. I only used a few mL of
the ammonia, and kept the window open while I was in there. Also if I remember right, my nickel chloride starting solution was made via nickel nitrate
-> hydroxide -> chloride by addition of base followed by acid. I'm not sure what the concentration was. I didn't want to isolate the solid
chloride because it's deliquescent and would be annoying to get completely dry, and as you saw it wasn't really critical to do so for the experiment.
Glad it worked for you! Any photos?
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thesmug
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| Quote: Originally posted by MrHomeScientist | | It's been a while since I recorded that, but if I remember right none of the smells in this experiment were too overpowering. I only used a few mL of
the ammonia, and kept the window open while I was in there. Also if I remember right, my nickel chloride starting solution was made via nickel nitrate
-> hydroxide -> chloride by addition of base followed by acid. I'm not sure what the concentration was. I didn't want to isolate the solid
chloride because it's deliquescent and would be annoying to get completely dry, and as you saw it wasn't really critical to do so for the experiment.
Glad it worked for you! Any photos? |
I will be sure to post some when I get home! I didn't get a very high yield because a lot of it was stuck in the filter paper  .
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blogfast25
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Nice blog, packetforger!
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thesmug
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http://imgur.com/2S53gOT.png
[Edited on 2/24/14 by thesmug]
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