Explain how to construct stock solutions

Explain how to construct stock solutions

Biochemists make stock solutions of reagents and use them to make working concentrations of buffers. Some of these include
A. 1 M Tris-HCl (pH 7.6)
B. 1 M Dithiothreitol?
C. 2 MKCl?
D. 1 M K2HPO4
E. 1 M KH2PO4?
F. 1M Potassium Phosphate (pH 7.2)
G. 10 M NaOH?
H. 1 M ZnSO4?
I. 1 M MgCl2?
J. 0.5 M Na2EDTA.
Describe how to construct these stock solutions. You decide on the final volumes and show your calculations. Note: 1 M ZnSO4, 1 M MgCl2, and 1 M Dithiothreitol should not be greater than 50 ml because they are used sparingly.

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