(a) Butanedioic acid, C4H6O4
is a stable compound which easily dissolves in water and reacts completely with
common bases. It is available as a pure solid. Nitric acid HNO3
is bought as a yellow liquid as it decomposes to form nitrogen dioxide. It
is readily soluble in water and reacts completely with all bases. Name the
most suitable primary standard and explain your choice.
(b) Ethanedioic acid C2H2O4 is a good primary
standard. What mass would you weigh out to prepare 250cm3 of a
0.100M solution.