Test 2: Lecture 1 Flashcards
What is the 1st reactant that is used up in the chemical reaction?
The limiting reactant
What is the reactant that is not completely used up in an equation called?
The excess reactant
What method can you use to figure out the excess and limiting reactants?
Compare the calculated molar ratio with the stoichiometric
What is the calculated molar ratio?
The ratio you get when you plug in the values given to get the moles
What is the stoichiometric ratio?
The ratio you get when you balance the equation
If (mol A/ mol B) calculated > (mol A/ mol B) stoichiometric, what is the excess and limiting reactant?
A is the excess
B is the Limiting reactant
If (mol A/ mol B) calculated < (mol A/ mol B) stoichiometric, what is the excess and limiting reactant?
A is the limiting reactant
B is the excess reactant
If the equation is balanced and you are given the number of mols of the limiting reactant, how can you find the moles of the product?
You put the LR/ Product = the stoichiometric ratio= mol of LR/ x
Why is percent yield important?
It is an indicator of the efficiency of a reaction or lab
What is the equation for percent yield?
AY/ TY x 100= PY
What is the actual yield?
The actual results of the experiment
What is the theoretical yield?
The calculated yield
