1) In a laboratory experiment to determine the amount of barium in solution, sulfuric acid was added to the solution to precipitate barium sulfate, which was then filtered and massed. In this experiment it is most important that
(a) the percent yield equals 100% and sulfuric acid is the limiting reactant.
(b) the actual yield equals 100% and the barium sulfate is insoluble.
(c) the theoretical yield is obtained when an excess of sulfuric acid is added.
(d) the actual yield is equal to the theoretical yield.
2) A known mass of compound X reacts to form compound Y. What is the minimum information you need to find the mass of Y produced?
(a) • the stoichiometric factor between X and Y
• the molar mass of X
• the molar mass of Y
(b) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molar mass of X
• the molar mass of Y
(c) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molar mass of Y
(d) • the molarity of solution X
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(e) none of the above
3) In a laboratory experiment to determine the amount of chloride in solution, silver nitrate was added to the solution to precipitate silver chloride, which was then filtered and massed. In this experiment it is most important that
(a) the silver chloride is insoluble.
(b) an excess of silver nitrate is added.
(c) the theoretical yield is 100% and the silver nitrate is the limiting reagent.
(d) the actual yield equals the theoretical yield when excess silver nitrate is added.
4) A known volume of solution X reacts to form compound Y. What is the minimum information you need to find the mass of Y produced?
(a) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molarity of solution Y
• the molar mass of Y
(b) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molar mass of Y
(c) • the stoichiometric factor between X and Y
• the molar mass of X
• the molar mass of Y
(d) • the molarity of solution X
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(e) none of the above
5) In a laboratory experiment to determine the amount of sulfate in solution, barium chloride was added to the solution to precipitate barium sulfate, which was then filtered and massed. In this experiment it is most important that
(a) the percent yield is 100%.
(b) the barium sulfate is insoluble.
(c) the percent yield is equal to the theoretical yield.
(d) the percent yield is 100% with the sulfate as the limiting reagent.
6) A known mass of compound X reacts to form solution Y. What is the minimum information you need to find the volume of solution Y produced?
(a) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molarity of solution Y
• the molar mass of Y
(b) • the molarity of solution X
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(c) • the stoichiometric factor between X and Y
• the molarity of solution Y
• the molar mass of X
(d) • the stoichiometric factor between X and Y
• the molar mass of X
• the molar mass of Y
(e) none of the above
7) A known volume of solution X reacts to form compound Y. What is the minimum information you need to find the volume of solution Y produced?
(a) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molarity of solution Y
• the molar mass of Y
(b) • the molarity of solution X
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(c) • the molarity of solution X
• the molarity of solution Y
(d) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molarity of solution Y
(e) none of the above
8) A known mass of compound X reacts to form compound Y. What is the minimum information you need to find the mass of Y produced?
(a) • the stoichiometric factor between X and Y
• the molarity of solution Y
• the molar mass of X
• the molar mass of Y
(b) • the stoichiometric factor between X and Y
• the molar mass of X
• the molar mass of Y
(c) • the molar mass of X
• the molar mass of Y
(d) • the molarity of solution X
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(e) none of the above
9) A known volume of solution X reacts to form compound Y. What is the minimum information you need to find the mass of Y produced?
(a) • the molarity of solution X
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(b) • the molarity of solution X
• the molarity of solution Y
• the molar mass of Y
(c) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molar mass of Y
(d) • the stoichiometric factor between X and Y
• the molar mass of X
• the molar mass of Y
• the molarity of solution Y
(e) none of the above
10) You have a known volume of solution X. Before you react it with compound Y, you want to find the mass of X in the solution. What is the minimum information needed?
(a) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molar mass of X
(b) • the molarity of solution X
• the molar mass of X
(c) • the stoichiometric factor between X and Y
• the molarity of solution X
• the molar mass of X
• the molar mass of Y
(d) • the molarity of solution X
(e) none of the above