Foundations of College Chemistry - Test 5 (chapters 7-9)
Terms in this set (10)
a reaction that releases heat; feels hot and makes the surroundings hot
heat or energy needed to begin an exothermic reaction; does not need to be continuously supplied
a reaction that absorbs heat; feels cool and makes the surroundings cool; energy (heat) must be supplied continuously to make it go
the analysis of the relative amounts of reactant(s) and product(s) involved in chemical reactions
the relative number of moles of any two chemicals involved in a balanced chemical reaction; the mole ration can be between two reactants, 2 products or between 2 reactants and products
the reactant in a reaction which limits the amount of product that can form; it is the first reactant to be "used up"
the reactant in a reaction which is not all used up when the limiting reactant is gone; some of it is left over; we say that the excess reactant is present "in excess"
the computed amount of a product that can be obtained from the limiting reactant according to the chemical equation; also called predicted yield
the amount of product really obtained when a reaction is carried out
the ratio of actual yield to theoretical (predicted) yield multiplied by 100%