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Gravimetric Analysis Question
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Topic: Gravimetric Analysis Question (Read 3474 times)
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Danb231
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Posts: 2
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Gravimetric Analysis Question
«
on:
February 25, 2010, 08:33:35 AM »
Hi.
I've carried out a gravimetric analysis on Ni(II)Cl
2
using Magnesium powder and I was hoping to check my results, so is it possible to find out the theoretical mass of Nickel from the following information and reaction equation?
Ni(II)Cl
2
+ Mg => MgCl
2
+Ni
Concentration of Ni(II)Cl
2
is 1moldm
3
.
Volume of Ni(II)Cl
2
is 15cm
3
.
Mass of magnesium used to displace Nickel is 0.6g.
Thanks.
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Danb231
Very New Member
Posts: 2
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Re: Gravimetric Analysis Question
«
Reply #1 on:
February 25, 2010, 09:00:26 AM »
I think I've figured it out myself.
Mol = volume x concentration, therefore moles on LHS = 0.03, because the ratio is one to one.
Which means that Ni = 0.015 x 56
= 0.84g
Can anyone tell me if this is correct?
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Borek
Mr. pH
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Deity Member
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I am known to be occasionally wrong.
Re: Gravimetric Analysis Question
«
Reply #2 on:
February 25, 2010, 09:29:04 AM »
Molar mass of Ni is not 56, so you are slightly off.
Just in case you should check if magnesium is not a limiting reagent.
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
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