Unit 6 Test Practice: Stoichiometry

Unit 6 Test Practice!

Multiple Select

Which of the following values could a student calculate a %-Yield for in an experiment? Select all that apply.

• Grams of limiting reactant used

• Grams of product produced

• Grams of excess reactant leftover

• All can have a %-Yield Value

Multiple Select

Which of the following could a %-error be calculated for? Select all that apply.

• Gram of product produced

• Liters of a gas product produced

• Grams of excess reactant leftover

Fill in the Blanks

Balance the following equation: TiCl_{4 (g)} + O_{2 (g)} --> Cl_{2 (g)} + TiO_{2 (s)}

If 86.3 L of TiCl₄ reacts with excess oxygen, how many grams of oxygen is used at STP?_ (do not type unit it answer, just the value with proper significant figures!)

Fill in the Blanks

Balance the following equation: TiCl_{4 (g)} + O_{2 (g)} --> Cl_{2 (g)} + TiO_{2 (s)}

How many liters of titanium(IV) chloride were used in the production of 18.3 grams of titanium(IV) oxide?_ (do not type unit it answer, just the value with proper significant figures!)

Multiple Choice

Balance the following equation: Na_(S) + Cl_{2 (g)} --> NaCl_(s)

If 25.0 grams of sodium reacts with 15.0 grams of chlorine gas, what is the limiting reactant?

• Sodium

• Chlorine

• Cannot be determined

Fill in the Blanks

Balance the following equation: Na_(S) + Cl_{2 (g)} --> NaCl_(s)

If 25.0 grams of sodium reacts with 15.0 grams of chlorine gas, how many grams of sodium chloride is produced? (Do not type the unit, just the value with proper significant figures!)

Multiple Choice

Balance the following equation: Na_(S) + Cl_{2 (g)} --> NaCl_(s)

The enthalpy of this reaction is +230.0 kJ/mol. Is the reaction endothermic or exothermic?

• endothermic

• exothermic

• cannot be determined

Fill in the Blanks

Balance the following equation: Na_(S) + Cl_{2 (g)} --> NaCl_(s)

The enthalpy of this reaction is +230.0 kJ/mol. How many grams of sodium are used at STP if this reaction absorbs 3440 kJ of energy? (just type the answer without a unit and proper signficant figures)