In a practical session, Hubert was asked to prepare potassiumperoxide, K2O2 (s). He measured 3.910 g of potassium metal andburnt it in a container of oxygen gas with a mass of 2.560 g.
a) Write a chemical equation with state symbols for the reactionbetween potassium and oxygen.
b) Deduce which reactant, potassium or oxygen, is limiting.
c) Calculate the amount, in gram, of K2O2 (s) produced in thereaction.
d) It was found that the mass of K2O2 (s) obtained in theexperiment was 3.609g. Calculate the percentage yield of K2O2(s).
