Standard of solutions

The list given below includes the substances that are most used and most useful for the standardization of solutions for precipitation titrations. Primary standard solutions are denoted by the letter (P) in Column 1. 

The refractive index method for the detn of wax plus lecithin described in 4.43.23 cannot be used when hot melt is present 4.4.3.5 Preparations of Solutions, Graphs and Standardization of Solutions ... 

Preparation and Methods of Standardization The details for the preparation and standardization of solutions used in several normalities are usually given only for the one most frequently required. Solutions of other normalities are prepared and standardized in the same general manner as described. Solutions of lower normalities may be prepared accurately by making an exact dilution of a stronger solution, but solutions prepared in this way should be restandardized before use. 

The authors are grateful to T. White and R. Snelling who assisted in performing such preliminary work as recrystallization, standardization of solutions, etc., and also to the computer center of Southwest Missouri State University for providing the computational facilities. 

Eor accurate standardization of solutions, the water content of the solid povidone must be determined before use and taken into account for any calculations. A specification for povidone is contained in the Food Chemicals Codex (FCC). 

Benzoic acid, CgHjCOOH, is sometimes used as a primary standard for the standardization of solutions of bases. A 1.862-g sample of the acid is neutralized by 33.00 mL of NaOH solution. What is the molarity of the base solution ... 

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