Chapter 12 Flashcards
Coefficients tell
How many particles
Number of moles
Stoichiometry
Study of quantitative relationships in a chemical reaction
Mole ratios allow scientists to
Predict how much of a product can be made
How to solve stoichiometric problem
1) balance
2) mass to moles
3) moles to moles
4) moles to mass
Limiting reactant
The reactant that runs out first
Excess reactant
The reactant that is left over
Reactions can be controlled by
- deliberately limiting one
- having a deliberate excess of a reactant
- removing product as it is formed
Theoretical yield
The amount of product you are supposed to get
Actual yield
The amount of product you actually get
Percent yield formula is
Actual yield. ____________
Theoretical yield. •100
Mole ratio
In a balanced equation the ratio between the numbers of moles of any two substances