User:Melissa Novy/Notebook/CHEM-572/2013/02/19

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(PLA2002D Films)
(PLA2002D Films)
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** Actual mass PLA2002D: 1.01686 g
** Actual mass PLA2002D: 1.01686 g
** Actual mass 100Ag-LMT: 0.05062 g
** Actual mass 100Ag-LMT: 0.05062 g
 +
** Final mass of PLA2002D + 5 wt% 100Ag-LMT: 0.97 g
<br>
<br>
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* Theoretical content of silver in PLA2002D + 5 wt% 100Ag-LMT:
+
* Actual content of silver in 0.5 g PLA2002D + 5 wt% 100Ag-LMT:
-
** Assume that all silver was exchanged into the clay.
+
** Please refer to data from the entries on [[User:Melissa_Novy/Notebook/CHEM-572/2013/02/05|2013/02/05]] and [[User:Melissa_Novy/Notebook/CHEM-572/2013/02/13|2013/02/13]] for the data listed below.
 +
<br>
 +
 
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  '''0.00622 g AgNO<sub>3</sub> × (1 mol AgNO<sub>3</sub>/169.87 g AgNO<sub>3</sub>) × (1 mol Ag<sup>+</sup>/1 mol AgNO<sub>3</sub>) = 3.66 × 10<sup>-5</sup> mol Ag<sup>+</sup>'''
 +
  '''[Ag<sup>+</sup>] in 5 mL 100Ag-LMT filtrate was 0.000253614 M'''
 +
  '''0.000253614 M Ag<sup>+</sup> × 0.005 L = 1.2681 × 10<sup>-6</sup> mol Ag<sup>+</sup>'''
 +
  '''Therefore, 3.66 × 10<sup>-5</sup> mol Ag<sup>+</sup> − 1.2681 × 10<sup>-6</sup> mol Ag<sup>+</sup> = 3.53 × 10<sup>-5</sup> mol Ag<sup>+</sup> was exchanged into 100Ag-LMT.'''
 +
<br>
 +
 
 +
  '''0.05 × 0.5 g PLA2002D + 5 wt% 100Ag-LMT = 0.025 g 100Ag-LMT
 +
  '''(3.53 × 10<sup>-5</sup> mol Ag<sup>+</sup>) ÷ (0.05062 g 100Ag-LMT) = x mol Ag<sup>+</sup> ÷ (0.025 g 100Ag-LMT)'''
 +
  '''4.47 × 10<sup>-8</sup>mol Ag<sup>+</sup> in 0.025 g 100Ag-LMT of 0.5 g PLA2002D + 5 wt% 100Ag-LMT film'''
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 +
===ISE Study of PLA2002D + 5 wt% 100Ag-LMT===
 +
* Calculations:
 +
** To determine maximum [Ag<sup>+</sup>] possible, assume that all Ag<sup>+</sup> leaches out of solution.
 +
** The solution contained 50 mL pure H<sub>2</sub>O and 1 mL [[User:Melissa_Novy/Notebook/CHEM-572/2013/02/12|ionic strength adjuster]].  The recommended ratio of solution to ionic strength adjuster is 50 mL to 1 mL.  Then, 0.50 g of film was added to the solution.
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  '''(4.47 × 10<sup>-8</sup>mol Ag<sup>+</sup>0 ÷ 0.051 L = 8.76 × 10<sup>-7</sup> M or 0.876 μM'''

Revision as of 13:17, 20 February 2013

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Objectives

  • Grind 100Ag-LMT made on 2013/02/05 into a fine powder.
  • Make PLA2002D + 5 wt% 100Ag-LMT film.
  • Make PLA2002D + 5 wt% LMT film.

PLA2002D Films

  • The protocol on 2013/02/06 was used to make the films.
  • Each film contained 5 wt% of 100Ag-LMT or LMT for one gram of PLA2002D.


  • PLA2002D + 5 wt% LMT film
    • Theoretical mass PLA2002D: 1 g
    • Theoretical mass LMT: 0.05 g
    • Actual mass PLA2002D: 1.009185 g
    • Actual mass LMT: 0.05060 g


  • PLA2002D + 5 wt% 100Ag-LMT film
    • Theoretical mass PLA2002D: 1 g
    • Theoretical mass 100Ag-LMT: 0.05 g
    • Actual mass PLA2002D: 1.01686 g
    • Actual mass 100Ag-LMT: 0.05062 g
    • Final mass of PLA2002D + 5 wt% 100Ag-LMT: 0.97 g


  • Actual content of silver in 0.5 g PLA2002D + 5 wt% 100Ag-LMT:


  0.00622 g AgNO3 × (1 mol AgNO3/169.87 g AgNO3) × (1 mol Ag+/1 mol AgNO3) = 3.66 × 10-5 mol Ag+
  [Ag+] in 5 mL 100Ag-LMT filtrate was 0.000253614 M
  0.000253614 M Ag+ × 0.005 L = 1.2681 × 10-6 mol Ag+
  Therefore, 3.66 × 10-5 mol Ag+ − 1.2681 × 10-6 mol Ag+ = 3.53 × 10-5 mol Ag+ was exchanged into 100Ag-LMT.


  0.05 × 0.5 g PLA2002D + 5 wt% 100Ag-LMT = 0.025 g 100Ag-LMT
  (3.53 × 10-5 mol Ag+) ÷ (0.05062 g 100Ag-LMT) = x mol Ag+ ÷ (0.025 g 100Ag-LMT)
  4.47 × 10-8mol Ag+ in 0.025 g 100Ag-LMT of 0.5 g PLA2002D + 5 wt% 100Ag-LMT film

ISE Study of PLA2002D + 5 wt% 100Ag-LMT

  • Calculations:
    • To determine maximum [Ag+] possible, assume that all Ag+ leaches out of solution.
    • The solution contained 50 mL pure H2O and 1 mL ionic strength adjuster. The recommended ratio of solution to ionic strength adjuster is 50 mL to 1 mL. Then, 0.50 g of film was added to the solution.
  (4.47 × 10-8mol Ag+0 ÷ 0.051 L = 8.76 × 10-7 M or 0.876 μM



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