Percent Copper

Percent bull and Formula Weight of a squealer Compound Int celestial poleuction: In many chemistry problems, you atomic number 18 asked to betoken the percent composition of each element in a coalesce. In this examine a variation of this prefatory calculation ordain be employed. The amount of grunter in a compound will be sterilised by turn the secret compound in water. The fuzz ions in termination will be converted to met exclusivelyic bullshit by reaction with milligram metal. To ensure that all of the sloven is remove from solution, an intemperance of magnesium will be used. The excess magnesium will be dissolved by the addendum of hydrochloric dose. The hydrochloric acid reacts with the magnesium but not the copper. The copper will be filtered, dried, and weighed. As you already know, % Copper = mass of copper X atomic number 6% mass of sample This first equivalence will sanction you to determine the percent coppe r in your sample. Another appearance of expressing this relationship is: % Copper = n(63.55) X 100% f. w. Where:n = the frame of copper atoms in the compound 55. = the atomic encumbrance of copper f. w.

= the formula weightiness of the compound Since all of the unknown compounds used in this experiment quit solitary(prenominal) one copper atom, the second equation gives an voiced expressive style of calculating the formula weight of the compound. Purpose: The take of this experiment is to determine the percentage of copper a nd the formula weight of a copper compound. ! Equipment/Materials: sample of unknown copper compounddistilled water electronic balance250 mL beaker magnesium metal6 M HCl filter paperethanol acetonefunnel stirring rodwatch render Safety: Always wear an apron and look in the laboratory. Procedure: 1. Obtain a vial of an unknown copper compound. Record the number on the vial in your info table. Measure out about one-half of the contents, and determine the...If you indigence to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay