Question

1. Brass is a metallic alloy of copper and zinc. The relative percentage of copper and zinc determine the properties of the brass; resistance to corrosion and malleability, for example, are dependent on the relative amounts of copper and zinc. The percentage of zinc within a sample of brass may be determined using the techniques encountered in this experiment.
A 0.3400g pi3ce of brass is allowed to react with hydrochloric acid at the base of eudiometer. The hydrogen gas generated in the reaction occupies a volume of 48.1 mL and leaves behind a column of acid that is 3.65 cm in height.
If barometric pressure is measured to be 0.9978 atm, determine the percentage of copper and zinc assuming the temperature of the solution is 22°C

Answer 1