IGEM:American University/2009/Notebook/CHEM 672/2017/02/14: Difference between revisions

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1. Zn(CH3COO)<sub>2:
1. Zn(CH<sub>3</sub>COO)<sub>2:




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2. NH<sub>4</sub>(CH3COO):
2. NH<sub>4</sub>(CH<sub>3</sub>COO):




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3. Na2S:  
3. Na<sub>2</sub>S:  




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4. CH3COOH:
4. CH<sub>3</sub>COOH:




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5. NH4OH:
5. NH<sub>4</sub>OH:




Revision as of 13:00, 18 February 2017

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Preparation of stock solutions

  • Stock solutions:


1. Zn(CH3COO)2:


• Mass: 0.0548 g

• 50 mL volumetric flask

• Concentration: 5 mM


2. NH4(CH3COO):


• Mass: 0.0385 g

• 100 mL volumetric flask

• Concentration: 5 mM


3. Na2S:


• Mass: 0.0390 g

• 100 mL volumetric flask

• Concentration: 5 mM


4. CH3COOH:


Concentrated Reagent: Acetic Acid 99.5 %, Molarity: 17.5 mol/L

• Volume: 28.7 µL

• 50 mL volumetric flask

• Concentration: 10 mM


• Volume: 287 µL

• 50 mL volumetric flask

• Concentration: 100 mM


5. NH4OH:


Concentrated Reagent: Ammonium Hydroxide 30%, Density: 0.895 g/mL

• Volume: 39.150 µL

• 100 Ml volumetric flask

• Concentration: 10 mM


6. NaOH:

• Mass: 0.2 g

• 50 mL volumetric flask

• Concentration: 100 mM .



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