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22 Sep 2009, 4:14 PM
| #1 (permalink) |
| Member  HSC: 2010 Gender: Female Location: Armidale
Join Date: May 2009
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Today, 10:25 AM  | Precipitation Question You can hide this advertisement by registering. I keep coming across these sort of questions in past papers and have NO IDEA where to start. Any help would be much appreciated. =)A chemical reaction between soluble potassium iodide and a solution of lead nitrate produces an insoluble lead salt as a precipitate. If 2.0 grams of the yellow lead salt precipitate was produced, what volume of 0.20 mol lead nitrate must have been used in the reaction, assuming all lead ions are precipitated? |
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22 Sep 2009, 4:44 PM
| #2 (permalink) | |
| Senior Member HSC: 2005 Gender: Male Location: Newcastle
Join Date: Jun 2004
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18 Mar 2010, 5:01 PM | Re: Precipitation Question Quote:
PbI2 m = 2.0 g F = 461.009 g.mol-1 n = 4.3383*10-3 mol Pb(NO3)2 n = 4.3383*10-3 mol C = 0.20 mol.L-1 V = 0.0217 L | |
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