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Beginning of Paper
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The Sequence of Chemical Reactions
Yang February 11, 1997
INTRODUCTION This experiment was to recover the most amount of copper after it
is subjected to a sequence of reactions. The copper is originally in solid
form, but the reactions will turn it into free Cu+2 ions floating in solution.
The ions will then be regrouped to form solid co ....
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Middle of Paper
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.... ~ 10
mL of 3M sulfuric acid to the beaker in order to dissolve the filtrate. Remove
and rinse the filter paper. Now add ~ 0.35 g of zinc powder to the solution and
stir until the solution becomes clear. Dissolve the excess zinc with more
sulfuric acid. Decant the liquid with a stirring rod, retaining only the copper.
Rinse the copper with distilled water and steam dry. Weigh the mass.
DATA/RESULTS initial mass of copper (g) 0.319 final mass of
copper (g) 0.305 % recovery = (final mass/initial mass) x 100
95.6
OBSERVATIONS -between steps ....
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SUBJECTS
