QC LAB - EXPERIMENT #2: PREPARATION OF 1N SODIUM HYDROXIDE SOLUTION

STANDARDIZATION

process of determining the exact concentration of a solution (titrant)

PRIMARY STANDARD

standard that is sufficiently accurate that it cannot be calibrated or subordinate to other standards; used to standardized secondary standards; used in titration to determine an unknown concentration and in other analytical chemistry techniques

HYGROSCOPICITY

absorbs moisture in the air

SECONDARY STANDARD

chemical that has been standardized against a primary standard

SODIUM HYDROXIDE

at room temperature, it is colorless and odorless crystalline solid; deliquescent; when dissolved in water or neutralized with acid, it liberates substantial heat which may be sufficient to ignite combustible materials; it is used in the manufacture of soaps, rayon, paper, explosives, dye stuff and petroleum products, etc