User:Patrick Hampson/Notebook/chem471/2017/04/05

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Running UV-Vis and preparing buffers 4-11

  • We ran our solutions that were prepared yesterday, that we found out were not the correct pH.

We made 0.2 M buffers for pH 4-9 using monobasic and dibasic sodium phosphate. We made them for pH 10-11 as well but it turns out that they cannot get above pH 9.1.

Actual pHs are as follows:

pH 4: 4.464

pH 5: 5.036

pH 6: 6.111

pH 8: 8.255

pH 9: 8.997

pH 10: 9.106

pH 11: 9.159