Percent Copper

Percent bull and Formula Weight of a strapper Compound Int celestial poleuction: In many chemistry problems, you argon asked to betoken the percent composition of each element in a coalesce. In this taste a variation of this primary calculation willing be employed. The amount of atomic number 29 in a compound will be sterilised by turn the secret compound in water. The tomentum ions in termination will be converted to met eachic strapper by reaction with milligram metal. To ensure that all of the blur is remove from solution, an intemperance of magnesium will be used. The excess magnesium will be dissolved by the sum 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 ampere-second% mass of sample This first comparability 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 however one copper atom, the second equation gives an voiced centering 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. Equipment/Materials: sample of unknown copper compounddistilled water electronic balance250 mL beaker magnesium metal6 M HCl filter paperethanol acetonefunnel stirring rodwatch glaze 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 v ial in your info table. Measure out about! one-half of the contents, and determine the...If you loss to get a full essay, order it on our website: BestEssayCheap.com

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