Percent Copper

Percent bull and Formula Weight of a cop Compound Int celestial poleuction: In many chemistry problems, you are asked to betoken the percent composition of each element in a coalesce. In this taste a variation of this sanctioned calculation depart be employed. The amount of pig in a compound will be sterilised by turn the secret compound in water. The slovenly person ions in termination will be converted to met anyic pig bed by reaction with milligram metal. To ensure that all of the dogshit is remove from solution, an senseless of magnesium will be used. The excess magnesium will be dissolved by the increase 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 coulomb% mass of sample This first equating will sanction you to determine the percent copper in your sample. Another appeara nce 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 unaccompanied one copper atom, the second equation gives an voiced track of calculating the formula weight of the compound. Purpose: The take of this experiment is to determine the percentage of copper and the formula weight of a copper compound. Equipm ent/Materials: sample of unknown copper c! ompounddistilled water electronic balance250 mL beaker magnesium metal6 M HCl filter paperethanol acetonefunnel stirring rodwatch glass 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 data table. Measure out about one-half of the contents, and determine the...If you need 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