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3. When the first half of the solution containing NaCl and KCI, obtained from 2 g of a feldspar sample, is precipitated with H,PtCl, in an alcoholic medium, the precipitate of K,PICI, is 486 mg. When the other half of the solution is precipitated with AGNO, 430.5 mg AgCl is formed. Calculate the percentage of Na,O and K,O in the sample. (H :1 g/mol; Na : 23 g/mol; Cl : 35.5 g/mol; K: 39 g/mol; Pt: 195 g/mol; Ag : 108 g/mol; N : 14 g/mol; O: 16 g/mol)

3. When the first half of the solution containing NaCl and KCI, obtained from 2 g of a feldspar sample, is precipitated with H,PtCl, in an alcoholic medium, the precipitate of K,PICI, is 486 mg. When the other half of the solution is precipitated with AGNO, 430.5 mg AgCl is formed. Calculate the percentage of Na,O and K,O in the sample. (H :1 g/mol; Na : 23 g/mol; Cl : 35.5 g/mol; K: 39 g/mol; Pt: 195 g/mol; Ag : 108 g/mol; N : 14 g/mol; O: 16 g/mol)

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter18: Representative Metals, Metalloids, And Nonmetals
Section: Chapter Questions
Problem 25E: A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric...
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3. When the first half of the solution containing NaCI and KCI, obtained from 2 g of a feldspar sample, is precipitated with H,PtCl, in an alcoholic medium, the precipitate of K,PICI, is 486 mg. When the other half of the solution is precipitated with AGNO3, 430.5 mg AgCl is formed. Calculate the percentage of Na,O and K,0 in the sample. (H :1 g/mol; Na : 23 g/mol; Cl : 35.5 g/mol; K: 39 g/mol; Pt : 195 g/mol; Ag : 108 g/mol; N : 14 g/mol; 0: 16 g/mol)
Transcribed Image Text:3. When the first half of the solution containing NaCI and KCI, obtained from 2 g of a feldspar sample, is precipitated with H,PtCl, in an alcoholic medium, the precipitate of K,PICI, is 486 mg. When the other half of the solution is precipitated with AGNO3, 430.5 mg AgCl is formed. Calculate the percentage of Na,O and K,0 in the sample. (H :1 g/mol; Na : 23 g/mol; Cl : 35.5 g/mol; K: 39 g/mol; Pt : 195 g/mol; Ag : 108 g/mol; N : 14 g/mol; 0: 16 g/mol)
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