CHEMICAL REACTIONSGeneral Chemistry Laboratory Experiment 12nd
semester, A.Y. 2014-2015
Prepared by:Castro, Mycah Laraine M.____________________Lagonoy,
Nesrine V.____________________Munda, Estella Regine
O.____________________Sillan, Tricia Dianne
S.____________________Sta. Ana, Erwin Rommel
C.____________________
Presented to:Engr. Claribelle Pempea
I. Materials
1 pc 50 ml beaker 3 pcs Iron Nails 1 small Sand Paper 2 pcs Test
tubes 1 pc Test tube rack Thread 1 pc Iron clamp 1 pc Iron
stand
II. Procedure
SILLAN, TRICIA DIANNE
MUNDA, ESTELLA REGINELAGONOY, NESRINESTA. ANA, ERWIN
ROMMELCASTRO, MYCAH LARAINE
III. Set Up
Figure 2 Actual Experiment (Iron nails immersed in the copper
sulfate solution)Figure 1 Materials used for the experiment.
Figure 5 Difference between the Cooper Sulfate SolutionFigure 4
Difference between the tied two iron nails and the unused
nail.Figure 3 After the experiment
IV. Data and Results There is a brown coating on the iron nail
which was dipped in the copper sulphate solution, whereas the iron
nail shows greyish colour of iron. The colour of the copper
sulphate solution in which the iron nail was dipped turns
yellowish, whereas the solution of copper sulphate in the other
test tube does not change. A little bit of the iron metal in the
nail dissolves into the water. The copper and iron have "traded
places.
V. Answers to Questions
1. Write the balanced reaction and determine whether it is
physical or chemical change.This shows that iron is more reactive
than copper as Fe2+ions have displaced Cu2+ions from copper
sulphate solution and form light yellowish coloured ferrous
sulphate solution, so it is a chemical change.
2. Classify what type of reaction is copper sulfate added by the
iron nail. Explain why When an iron nail is dipped in copper
sulphate solution, a brown coating of copper is formed on the
surface of iron and the colour of copper sulphate solution changes
from blue to light green. This reaction shows that iron is more
reactive than copper as it displaces copper from its solution and
iron passes into solution as Fe2+ions and ferrous sulphate solution
is formed. This is a single displacement reaction in which copper
has been displaced from iron from copper sulphate solution.
Conclusion
