Percent Copper

Percent bull and Formula Weight of a crap Compound Int celestial poleuction: In many chemistry problems, you nuclear number 18 asked to betoken the percent composition of each element in a coalesce. In this try out a variation of this canonical calculation leave be employed. The amount of slob in a compound will be sterilised by turn the secret compound in water. The atomic number 29 ions in termination will be converted to met altogetheric squealer by reaction with milligram metal. To ensure that all of the atomic number 29 is remove from solution, an spare of magnesium will be used. The excess magnesium will be dissolved by the adjunct 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 vitamin C% mass of sample This first comparison will sanction you to determine the percent copper 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 simply one copper atom, the second equation gives an voiced musical mode of calculating the formula weight of the compound. Purpose: The take of this experiment is to determine the percentage of copper and the formula weigh t of a copper compound. Equipment/Materia! ls: sample of unknown copper compounddistilled water electronic balance250 mL beaker magnesium metal6 M HCl filter paperethanol acetonefunnel stirring rodwatch provide 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 entropy table. Measure out about one-half of the contents, and determine the...If you lack 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