User:Melissa Novy/Notebook/CHEM-581/2012/11/16

(Difference between revisions)

Revision as of 16:39, 16 November 2012

Standardize 1 M NaHCO₃ solution.
Soak PVOH (MW 22000) in HPLC grade H₂O to determine change in mass due to swelling.
Soak PVOH (MW 22000), 1 mL glutaraldehyde, 1 mL porphyrin in 2 wt% H₂SO₄.

CALCULATIONS

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-==Entry title==
+==Objectives==
-* Insert content here...
+* Standardize 1 M NaHCO<sub>3</sub> solution.
+* Soak PVOH (MW 22000) in HPLC grade H<sub>2</sub>O to determine change in mass due to swelling.
+* Soak PVOH (MW 22000), 1 mL glutaraldehyde, 1 mL porphyrin in 2 wt% H<sub>2</sub>SO<sub>4</sub>.
+==Standardization of NaHCO<sub>3</sub>==
+* Protocol
+*# Weigh out 20 g of potassium hydrogen phthalate (KHP).
+*# The mass was divided into thirds, and then dried in the oven at 90°C for 48 hours.
+*# Each sample was divided in half again to give six samples of KHP total.
+*# One sample was placed in a 100 mL beaker and 2 drops of bromothymol blue was added.
+*# 1 M NaHCO<sub>3</sub> was poured into a titration buret and the initial volume was recorded.
+*# The KHP was titrated with the NaHCO<sub>3</sub> solution until the solution in the beaker turned blue and stopped fizzing.
+*# The process was repeated for two more KHP samples.
+*# The number of moles in the NaHCO<sub>3</sub> solution was calculated.
+CALCULATIONS
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