Inorganic Chemistry Answers

Iron metal is produced in a blast furnace by the reaction of iron (III) oxide and coke (pure carbon). If 25.0 moles of pure Fe2O3 is used, how many grams of iron can be produced? The balanced chemical equation for the reaction is:

Ammonia is produced synthetically by the reaction below. How many moles of NH3 are formed when 200.0 g of N2 reacts with hydrogen?

Solutions of iron (III) chloride, FeCl3, are used in photoengraving and to make ink. This compound can be made by the following reaction:



a.) How many grams of Fe are needed to combine with 4.5 moles of Cl2?

b.) If 240 g of Fe is to be used in this reaction, with adequate Cl2, how many moles of FeCl3 will be produced

a. Identify the limiting reagent when 15.0 g of H2 reacts with 48.0 g of O2 to produce water.
b. What is the mass of water produced?

If 10.00 g of magnesium is reacted with 95.75 g of copper (II) sulphate, magnesium sulphate and copper are formed.



a. Which reactant is in excess?
b. Calculate the mass of copper formed.

Zinc reacts with hydrochloric acid based on the following equation:


If 150 g of Zn reacts with 73 g of HCl:

a. Which reactant is the limiting reagent?
b. What mass of ZnCl2 would be produced?

The thermite reaction has been used to weld railroad rails, make bombs, and ignite solid rocket fuel. The equation of the reaction is:



a.) What is the theoretical yield of iron if 100.0 g of Fe2O3 is used?

b.) What is the percentage yield if 52.3 g of iron is actually produced?

Powdered zinc metal reacts with sulphur (S8) when heated to produce zinc sulphide.



a. )What mass of product can be produced with 25 g of zinc?

b.) What is the actual yield if the percentage yield was 80%?

When 9.0 g of hydrogen gas, H2, reacts with oxygen gas, O2, 73.0 g of water is produced.

a.) What is the theoretical yield of water?

b.) What is the percentage yield?

Explain the steps you would follow to make 500 mL of a 0.5 mol/L solution of sodium chloride (NaCl) in the lab.