Solve the following problems on a separate sheet of paper. Show all your work
16. Use the chemical reaction benzene + oxygen ------> carbon dioxide + water to answer the following questions
a. How many mol of CO2 are produced for every mol of benzene reacted?
b. How many liters would this amount of CO2 occupy at STP?
c. What volume of CO2 will be produced when 128.0g of benzene reacts at STP?
17. When propane reacts with oxygen, carbon dioxide and water are produced.
a. When 7.51g of propane reacts with excess oxygen, how many grams of carbon dioxide are formed?
b. If 18.6g of carbon dioxide are actually formed what is the percent yield of this reaction?
18. Aluminum reacts spontaneously with Bromine to produce AlBr3
a. If 15.0g of aluminum reacts with 46.0g of Bromine which is the limiting reactant?
b. What is the percent yield of this reaction if 31.0g of AlBr3 are produced
19. The commerical production of nitric acid involves the reaction of nitrogen dioxide gas with water. An additional by product is NO.
a How many kilograms of NO2 are needed to produce 500kg of nitric acid.
b If this process has a percent yeild of 88%, calculate the actual yield in this reaction.
21. Iron reacts with oxygen to produced iron (111)oxide or rust . Write a balanced equation for this reaction. If an iron nail with a mass 4.3g reacts completely with oxygen, how many g of Fe2O3 would be produced? How many liters of oxygen are required for the reaction at STP?
22. Aluminum chloride is made by reacting scrap aluminum with chlorine gas.
a. What is the chemical reaction for this process?
b. If 3.5g of aluminum is used, how many grams of aluminum chloride are produced?
23. Ethene gas is used by welders.
a. If ethene and oxygen are supplied in tanks of equal size at STP, how many tanks or oxygen would be needed to burn one tank of acetylene? Think of a tank as being one mole.
b. Why do you think welders often carry a large tank of oxygen and a small tank of ethene on welding carts?
24. Phosphorus and bromine react vigorously together to form PBr3
a. If 5g of phosphorus and 35g of bromine react which is limiting reactant?
b. How many g of PBr3 will be produced?
c. If the actual yield of PBr3 is 30g, what is percent yield?