Vocabulary
A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.
What is mole ratio?
CO2 + 2LiOH --> Li2CO3 + H2O
How many moles of lithium hydroxide are required to react with 20 mol of CO2?
What is 40 mol LiOH?
Mg + 2HCl --> MgCl2 + H2
How many grams of hydrogen will be produced if we start with 2 moles of HCl
What is 2 g H2?
Mg + 2HCl --> MgCl2 + H2
What mass of hydrogen is produced from the reaction of 75 g HCl (MM=36.5 g/mol)?
What is 2.0 g H2?
N2 + 3H2 --> 2NH3
In an experiment, a student produces produced 30 g of product. The theoretical yield was 34 g. What is the student's percent yield?
What is 88%?
The amount of product produced in a lab during an experiment
What is actual yield?
6CO2 +6H2O --> C6H12O6 + 6O2
How many moles of carbon dioxide are needed to react with 3.25 mol of water in the reaction described above?
What is 3.25 mol CO2?
Mg + 2HCl --> MgCl2 + H2
What mass of HCL (MM=36.5 g/mol) is needed to react with 2.50 moles of magnesium?
What is 182 g HCl?
2KClO3 --> 2KCl + 3O2
How many grams of KCl are produced if 5.0 g of KClO3 is decomposed?
What is 3 g KCl?
2H2 + O2 --> 2H2O
What is the mole ratio of oxygen to water
What is 1:2
The reactant that gets consumed first and limits the amount of product produced
What is the limiting reactant?
2Mg +O2 --> 2MgO
How many moles of magnesium oxide are produced from 1.2 moles of magnesium?
What is 1.2 mol MgO?
4Al + 3O2 --> 2Al2O3
How many moles of aluminum atoms are needed to combine with 1.58 mol of oxygen molecules.
What is 2.1 mol Al?
2Na +Cl2 --> 2NaCl
Determine the amount in grams of NaCl that can be produced from 24.7 g of Na.
What is 62 g NaCl?
What does percent yield tell you?
What is the efficiency of the reaction
The ratio of the actual yield to the theoretical yield, multiplied by 100.
What is percent yield?
2NH3 --> 3H2 + N2
How many moles of NH3 are produced when 6 mol of hydrogen gas react with nitrogen gas?
What is 4 mol NH3?
2NH3 --> N2 + 3H2.
How many moles of H2 can be formed by the decomposition of 0.145 moles of ammonia?
What is 0.218 mol H2?
2NaOH + H2SO4 --> 2H2O + Na2SO4
How many grams of Na2SO4 (MM=124 g/mol) will be formed from 200 g NaOH (MM=40 g/mol).
What is 355 g Na2SO4?
LiOH + H2SO4 --> Li2SO4 + H2O
What is the excess reactant if 4.2 grams of LiOH and 5 grams of H2SO4 are used?
What is LiOH
Reactant that is leftover after a reaction stops
What is excess reactant
2H2 + O2 --> 2H2O
How many moles of oxygen would be required to produce 5.0 moles of water?
What is 2.5 mol O2?
4Al2O3 + 9Fe--> 3Fe3O4 + 8Al.
Determine with limiting reactant when 5 moles of Al2O3 reacts with 7 moles of Fe.
What is iron?
CuCl2 + 2NaNO3 --> Cu(NO3)2 + 2NaCl
If 15 g CuCl2 (MM=134.5 g/mol) react with 20 g NaNO3 (MM=85 g/mol), what is the theoretical yield of NaCl (MM = 58.5 g/mol)?
What is 13.0 g NaCl?
This questions is worth 1000 points! SURPRISE! Cl2 reacts with KBr to produce KCl and Br2. How many grams of KCl can be produced from 300. g of Cl2 and 300 g of KBr?
What is 188 g KCl?