REPORT ON PART III: ANALYSIS OF NICKEL Sample Preparation: Mass of beaker and Ni
ID: 522327 • Letter: R
Question
REPORT ON PART III: ANALYSIS OF NICKEL Sample Preparation: Mass of beaker and Nicl2.6 H20 Mass of beaker Mass of Nici 6 H20 Mass of beaker and compound Mass of beaker Mass of compound Spectrophotometric Measurements: Absorbance Concentration (mol/L) Stock Solution First diluted solution Second diluted solution Complex compound solution -eiol7 x Estimated concentration of synthesized compound in solution based on Beers Law plot: Hand-drawn: mol/L Computer-generated (optional) mol/L (Circle the value above that you are using for your calculations below.) Moles of nickel in sample (total): Moles of nickel per gram of sample Mass of nickel per gram of sample: Percentage by mass of nickel in sample You ARE Now READY TO coMLPETE THE REPORT FOR THIS ExPERIMENT. READ THE GUIDE ON THE NEXT PAGE, AND CoMPLETETHE REPORT THAT FOLLows m.Explanation / Answer
Moles of the nickel in the sample (total) = 0.601 gm / 58.7 gm/mol = 0.01023 mol
Moles of Nickel per gram of sample =
1.110 gm has 0.01023 mol of Ni
1 gm has ? mol (x)
x = 0.01023 mol of Ni / 1.110 gm = 9.2162*10-3 mol of Ni / gm
mass of Nickel = 9.2162*10-3 * 58.7 gm/mol = 0.5409 gm of Ni / gm of sample
% by mass of Ni in sample = (0.5409 gm / 1.110 gm)*100 = 48.738%
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