[CHEM 1120] Lab#5:Analysis of an Iron-Containing Salt with Question and Answer
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Course
CHEM 1120
Institution
CHEM 1120
[CHEM 1120] Lab#5:Analysis of an Iron-Containing Salt with Question and Answer
When titrating the solution can X, Y, Z, or n be found in KxFey(C2O4)z·nH2O? - Correct Answer>>Z
What should be on that table for this lab? - Correct Answer>>Grams of iron salt, Inital V, Final v, and V ...
[CHEM 1120] Lab#5:Analysis of an Iron-Containing Salt with
Question and Answer
When titrating the solution can X, Y, Z, or n be found in KxFey(C2O4)z·nH2O? - Correct
Answer>>Z
What should be on that table for this lab? - Correct Answer>>Grams of iron salt, Inital V,
Final v, and V of KMnO4 (f-i)
What is the correct formula for KxFey(C2O4)z·nH2O - Correct Answer>>K3Fe(C2O4)3 *
3H2O
What is the correct balanced equation of the reaction in this lab? - Correct
Answer>>2Fe(NH4)2(SO4)2·6H2O + 3H2C2O4+ 3K2C2O4 + H2O2 ->
2K3Fe(C2O4)3·3H2O + 2(NH4)2SO4 + 2H2SO4 + 2H2O
How do you balance half of a redox reaction? - Correct Answer>>Start by looking at just the
way one atom appears on both sides but the charge must change on this atom. Then look
at the change in electrons from one side to the other and apply them appropriately. Then do
the same for the other molecule. Then balance the e- on both sides
how do you calculate the mass percent of oxalate ion in complex iron salt? - Correct
Answer>>Multiply the volume of KMnO4 by the given concentration and then multiply that
by the mol ratio which (5/2). Then multiply that by the 88.02 (MM) and then divide by the
original mass measured and x 100
What do you make the blank with? - Correct Answer>>The same exact things minus the salt
so the same amount of water
What is the redox reaction for one of the two times this shows up? - Correct Answer>>(5 e-
+8H+ + MnO4- ---> Mn2+ + 4H2O) x2
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