Posted by Terry on Friday, May 2, 2008 at 1:58pm.
a) Find the empirical formula for KxFey(C2O4)z·nH2O given % percents:
potassium = 34.5%
iron = 11.4%
water = 11.0%
oxalate = 43.1 %
b) Insert values for x, y, z into KxFey(C2O4)z·nH2O then give correct coefficients to balance the equation:
_Fe(NH4)2(SO4)2*6H20 + __H2C2O4 + __K2C2O4 + H2O2 > __K3Fe(C2O4)3*3H20 + __(NH4)2SO4 + __H2SO4 + H20
I have this part, I know that it's
2 Fe(NH4)2(SO4)2*6H20 + 3 H2C2O4 + 3 K2C2O4 + 1 H2O2 > 2 K3Fe(C2O4)3*3H20 + 2 (NH4)2SO4 + 2 H2SO4 + 2 H20
c) Using the balanced equation and mass of Fe(NH4)2(SO4)2*6H20 (2.501g) determine the percent yield of KxFey(C2O4)z·nH2O.

Chemistry  DrBob222, Friday, May 2, 2008 at 2:22pm
a) Find the empirical formula for KxFey(C2O4)z·nH2O given % percents:
potassium = 34.5%
iron = 11.4%
water = 11.0%
oxalate = 43.1 %
Take a 100 g sample. That will give you
34.5 g K
11.4 g Fe
11.0 g H2O
43.1 g oxalate (C2O4)
Now divide mols = g/molar mass.
From mols of each, determine the ratio of one to the other. The easy way to do this is to divide the smallest # mols by itself. That will make that element/polyatomic ion 1.000. Then, to keep things equal, divide the other mols by that same number, then round to the enarest whole number (but I caution not to round numbers from 0.4 to 0.6 up or down). That will give you the formula. Do that part, then we can talk about the remainder. You may be able to solve the rest of the problem after getting the formula.

Chemistry  alfantri_fantri, Friday, November 13, 2015 at 4:51am
bantuan membuka kata sandi
Answer This Question
Related Questions
 chemistry lab  Insert your values for x, y, z, & n into KxFey(C2O4)z·nH2O and ...
 Lab/Chemistry  In lab, I weighed out and found the molarity of 1.108g Na2C2O4 ...
 Chemistry please help  In lab, I weighed out and found the molarity of 1.108g ...
 Chem  In lab, the ratio of moles C2O4^2/Fe^3+ was 0.0063 to 0.0017, which is 3...
 chemistry  Really need help on figuring out the formula for Iron Complex. The ...
 Chemistry  1.) A 3.000gram sample of a hydrate compound containing Co, C2O4, ...
 Chemistry urgent!  When a solution of sodium oxalate (Na2C2O4) is added to a ...
 balanced equation  ? MnO4– + ?H+ + ?C2O42– > ?Mn2+ + ?H2O + ?CO2 what's ...
 Chemistry  What is the mass of La2(C2O4)3*9H2O, can be obtained from 650mL of 0...
 Chemistry  The following questions refer to the following system: 500 mL of 0....
More Related Questions