Part 2: Assay of tartaric acid (Jenkin's Quantitative Pharmaceutical Chemistry by Knevel, pp.108) Place about 2 g of tartaric acid previously dried and accurately weighed in a conical flask. Dissolve it in 40 ml of water, add a few drops of phenolphthalein TS, and titrate with 1 N sodium hydroxide! Each ml of 1 N sodium hydroxide is equivalent to 75 mg of tartaric acid. *Note: Volume of sodium hydroxide was observed at 26.5 ml USP Requirement: Not less than 99.7 and not more than 100.5%) Data Wt of tartaric acid MW tartaric acid meg of tartaric acid Volume of sodium hydroxide solution used (ml) % purity Trial 1

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.