Flashcards in 6.6 + 6.7 Deck (20):
Law of conservation of mass
matter can't be created or destroyed
ratio of moles for any two substances in an equation
max amount of product
how is theoretical yield calculated?
calculated with a balanced equation
amount of product obtained when reaction takes place
ratio of actual yield to theoretical yield
formula for calculating percent yield?
percent yield= (actual yield(g) / theoretical yield(g)) x 100
substance in chemical reaction that is used up first which limits amount of product formed
left over from limiting reactant
What are the 3 conditions for a chemical reaction to occur?
reactants align properly to break/form bonds
collision provides energy of activation
amount of energy required to break bonds between atoms of the reactants
What happens if energy of collision is less than energy of activation?
molecules bounce apart without reacting
when collision occurs, are products formed often?
heat of reaction
amount of heat absorbed/released during reaction
how do you find the heat of reaction (formula)
heat of product-heat of reactants
which has greater energy, reactant or product?
heat reaction value
energy of reactant greater than energy of product
heat reaction value is negative (-)