Introduction When iron is mixed to Copper (Ⅱ) Chloride; the product will be copper and iron chloride. However, in this experiment, we do not have the information of the oxidation number for iron nails. There are 2 different oxidation numbers for iron; that are 2 or 3. We will need to check each of the equations to find out the moles of each element in the equation. Then we can compare the ratio between the mole and the mass …showed first 75 words of 898 total…

…showed last 75 words of 898 total…Cu =2.849.......(g) Cu 　　　Finally, we have calculated the theoretical yield of copper; we can now calculate the percent yield of copper: Percent yield of copper= 4.679(g)Cu ×100 2.849......(g) Cu =164.2% Conclusion 　　　When 2 solid iron nails is added to a solution of copper (II) chloride, a displacement reaction will occur. Also, products of reaction are iron (Ⅲ) chloride and copper (II). 　 In this experiment the actual oxidation number of iron is 3. The percent yield of copper is approximately 164.2%.