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18 Nov 2019
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1. HNO, is a corrosive acid. It is used to keep C02 gas from the air from beginning to precipitate the Fe ion in today's solution. Corrosive acids cannot be discarded down the sink. How do we properly dispose of these acids? 2. In a similar experiment, 50.00-mL volumetric flasks were used to make standard solutions S1- S6 using 10.00 mL of 0.200 MFe(NO)s in 0.10 MHNO, and various volumes of 2.00 x 103 M NaSCN in 0.10 mol/L HNO, and filling the flasks with 0.10 molL HNO. Part I. Complete the following table by filling in the gray boxes. Show work for your calculations on a separate sheet of paper Table A S1 S2 S3 S4 S5 S6 (blank) Volume of 2.00 x 103 M 0.00 1.00 NaSCN, mL Final volume of standard 50.00 50.00 solutions, mL 2.00 3.00 4.00 5.00 50.00 50.00 50.00 50.00 SCN] in standard solution, M [FeNCS ] in standard 0.00 solution, M Absorbance of standard 0.00 solution 8.00 x 10 1.6 x 104 8.00 x 10 1.6 x 10 0.0958 0.182 0.276 0.343 0.413 Make a Beer's Law plot by graphing absorbance versus [FeSCN '] concentration.
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1. HNO, is a corrosive acid. It is used to keep C02 gas from the air from beginning to precipitate the Fe ion in today's solution. Corrosive acids cannot be discarded down the sink. How do we properly dispose of these acids? 2. In a similar experiment, 50.00-mL volumetric flasks were used to make standard solutions S1- S6 using 10.00 mL of 0.200 MFe(NO)s in 0.10 MHNO, and various volumes of 2.00 x 103 M NaSCN in 0.10 mol/L HNO, and filling the flasks with 0.10 molL HNO. Part I. Complete the following table by filling in the gray boxes. Show work for your calculations on a separate sheet of paper Table A S1 S2 S3 S4 S5 S6 (blank) Volume of 2.00 x 103 M 0.00 1.00 NaSCN, mL Final volume of standard 50.00 50.00 solutions, mL 2.00 3.00 4.00 5.00 50.00 50.00 50.00 50.00 SCN] in standard solution, M [FeNCS ] in standard 0.00 solution, M Absorbance of standard 0.00 solution 8.00 x 10 1.6 x 104 8.00 x 10 1.6 x 10 0.0958 0.182 0.276 0.343 0.413 Make a Beer's Law plot by graphing absorbance versus [FeSCN '] concentration.
Nestor RutherfordLv2
31 Mar 2019