Even More Percent Yield

Study Guide

Even More Percent Yield

Find the molar mass of the following

1.  Na3PO4

2.  MgSO4

3.  Mg3(PO4)2

4.  Zn3(PO4)2

5.  FeSO4

6.  Fe3(PO4)2

To get the percent yield you must divide the actual yield, by the theoretical yield times 100.

7.  Can your percent yield be greater than 100%?

8.  What is the percent yield if your actual yield is 0.00452 g and your theoretical yield was 0.184 g?

9.  What is the percent yield if your actual yield is 93.78g and your theoretical yield was 96.8 g?

10.  What is the percent yield if your actual yield is 8.00g and your theoretical yield was 9.73 g?

11.  What is the actual yield if you know the reaction has a 16% percent yield and the theoretical yield is 64.03 g?

12.  What is the actual yield if you know the reaction has a 96.8% percent yield and the theoretical yield is 0.251g?

13.  What is the actual yield if you know the reaction has a 17.98% percent yield and the theoretical yield is 6.44 g?

Solve the following. You need to balance the equations first.

14.  Determine the percent yield for the reaction between 26.5g of MgSO4 and Na3PO4 if 18.4g of Mg3(PO4)2 is produced.

3MgSO4+ 2Na3PO4 à3Na2SO4 + Mg3(PO4)2

15.  Determine the percent yield for the reaction between 28.1g of ZnCl2and excess Na3PO4 if 17.3g of NaCl is recovered along with an unknown amount of Zn3(PO4)2.

3ZnCl2+ 2Na3PO4 à6 NaCl + Zn3(PO4)2

16.  Determine the percent yield for the reaction between 54.89g of FeSO4 and excess Na3PO4 to produce 12.8g of Fe3(PO4)2 and an unknown quantity of Na2SO4.

3FeSO4+ 2Na3PO4 à3Na2SO4 + Fe3(PO4)2

17.  Determine the percent yield for the reaction between 15.8g of NaOH and excess MgSO4 to produce 9.8g of Mg(OH)2 gas and Na2SO4.

2NaOH + MgSO4 àNa2SO4 + Mg(OH)2