# User:Melissa Novy/Notebook/CHEM-572/2013/02/13

(Difference between revisions)
 Revision as of 13:53, 13 February 2013 (view source)← Previous diff Revision as of 13:54, 13 February 2013 (view source) (→Objectives)Next diff → Line 18: Line 18: * Make a calibration curve for the determination of Ag+ in solutions. * Make a calibration curve for the determination of Ag+ in solutions. ** Make 0.10 M AgNO3 solution. ** Make 0.10 M AgNO3 solution. + * Remove PLA2002D + 5 wt % LMT film from glass mold. ==0.1 M AgNO3 Solution== ==0.1 M AgNO3 Solution==

## Revision as of 13:54, 13 February 2013

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## Objectives

• Make a calibration curve for the determination of Ag+ in solutions.
• Make 0.10 M AgNO3 solution.
• Remove PLA2002D + 5 wt % LMT film from glass mold.

## 0.1 M AgNO3 Solution

• Calculations
```  250 mL of 0.1 M AgNO3
MW AgNO3 = 169.87 g/mol
0.1 M × 0.250 L = 0.025 mol
0.025 mol AgNO3 × (169.87 g AgNO3/1 mol AgNO3) = 4.24675 g AgNO3
```
• Actual mass AgNO3: 4.24694 g
• Actual molarity AgNO3: 0.10000 M AgNO3

## Ag+ Ion Selective Electrode Calibration

• The protocol from 2013/02/12 was followed using solutions of the following [AgNO3]:
• 0 M AgNO3
• 0.0001 M AgNO3
• 0.0010 M AgNO3
• 0.0105 M AgNO3
• 0.1000M AgNO3
• Conductivity of solutions of AgNO3
 [Ag+] [M] log [Ag+] [] Conductivity [mV] 0.00000 0 394.6 0.00000 0 390.7 0.00000 0 386.4 0.00010 -4 377 0.00010 -4 375.2 0.00010 -4 374.7 0.00100 -3 411.6 0.00100 -3 411.8 0.00100 -3 411.8 0.01050 -1.98 470.1 0.01050 -1.98 470.3 0.01050 -1.98 470.3 0.10000 -1 528.5 0.10000 -1 528.5 0.10000 -1 528.5