Limiting Reactant/Percent Yield
Be + 2 HCl ---> BeCl2 + H2
The theoretical yield of beryllium chloride was 10.7 grams. If the reaction actually yields 4.5 grams, what is the percent yield?
What is 42%
The mass relationships between reactants and products in a chemical reaction
What is Stoichiometry?
CO2 + 2LiOH --> Li2CO3 + H2O How many moles of lithium hydroxide are required to react with 20 mol of CO2?
What is 40 moles?
The percent yield should be lower than
What is 100%?
N2 + 3H2 --> 2NH3 In the reaction above, a student reacted 28 g of nitrogen with an excess of hydrogen. According to the students measurements, the reaction produced 30 g of product. The theoretical yield was 34 g. What is the student's percent yield?
What is 88%
Avogadros Constant
What is 6.02 * 10^23?
Mg + 2HCl --> MgCl2 + H2 What mass of hydrochloric acid (MM=36.5 g/mol) is needed to react with 2.50 moles of magnesium?
What is 182 g HCl?
The substance that isn't completely used in a reaction
What is the excess reactant?
C12H22O11 + 12O2 ---> 12CO2 + 11H2O. Here are 10.0 g of sucrose and 10.0 g of oxygen reacting. what is the limiting reagent?
What is Oxygen?
Reactant that determines the amount of product that can be formed; reactions occur until the ______ _______ is fully used
What is Limiting Reactant?
How many liters of H2 are created from the reaction of 20.0g K?
2K+2H2O ----> 2KOH +H2 (already balanced)
What is 5.75 Liters H2
The number you multiply moles by to get Liters @ STP?
What is 22.4?
2 P + 3 Br2 ---> 2PBr3
If 35.0 grams of bromine are reacted and 27.9 grams of phosphorous tribromide are formed, what is the percent yield?
what is 70.63%
(Theoretical Yield/Actual Yield )* 100
What is Percent Yield
How many liters of SO2 will be produced from 26.9L O2?
S2+2O2 ---> 2SO2
What is 26.9 Liters?
To get from liters to grams you have to get to _____ first.
What is moles?
3 NaOH(aq) + H3PO4(aq) → Na3PO4(aq) + 3 H2O(l)
If 35.60 grams of NaOH is reacted with 30.80 grams of H3PO4, what is the limiting reactant.
What is NaOH
Conversion factor between compounds in a chemical reaction, usually utilizes coefficients.
Sodium and chlorine react to produce sodium chloride (table salt; MM=58.5 g/mol). Determine the amount of product that can be produced from 24.7 g of sodium and excess chlorine.
What is 62 g NaCl?
Who is mr ting? ting is king <3