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Topic: Nickel  (Read 4229 times)

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streakz

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Nickel
« on: October 26, 2004, 02:00:26 AM »
A 10.00ml sample of an unknown aqueous nickel(II) solution was treated and found to produce 0.0532 g Ni(DMG)2 precipitate. Calculate the percent Nikckel in the ore sample.

i went from 0.0532/58.7 and got 9.00x10-4 .. im pretty sure im not on the rite track


Answer 0.108% nickel

Offline AWK

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Re:Nickel
« Reply #1 on: October 26, 2004, 03:35:05 AM »
MM of (DMG)2Ni is 288.7
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streakz

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Re:Nickel
« Reply #2 on: October 28, 2004, 10:30:15 AM »
i got it now...
0.0532g g of Ni(DMG)2 x 1 mol / 288.7 MM = 1.84 x 10-4 mols
1.84 x 10-4 mol  x 58.7g Ni / mol = 0.0108g Ni
0.0108g x mL / 10.00g = 0.000108g x 100 = 0.108%

Offline AWK

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Re:Nickel
« Reply #3 on: October 29, 2004, 03:39:39 AM »
OK
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