Stoichiometry

Question 1

Note: to complete any stoich conversion, it must be in mols

*exception is gas -> gas stoich, where we apply avogadro’s law

Question 2

define limiting reactant

Answer 2

the reactant that yields the lesser amount of product. the LR is entirely used up by the end of the reaction + causes the reaction to end

Question 3

define excess reactant

Answer 3

the reactant that could yield the largest amount of product. The excess reactant does not get completely used up.

Question 4

% yield formula

Answer 4

actual yield/ theoretical yield x 100

Question 5

formula for calculating % H2O in a hydrate (by chem formula)

Answer 5

% = mass of H2O in hydrate/ total mass of hydrate x 100

Question 6

formula for calculating % H2O in a hydrate (by experimental masses)

Answer 6

% H2O = mass H2O/ mass hydrate x 100