Prelaboratory Problems
1. Balance the following reactions:
Fe(s) + Br2
(g) Fe2Br3
(s)
C6H6
(l) + O2
(g) CO2
(g) + H2O(g)
2. A 1.275 g sample of Al was heated strongly in pure oxygen and the combustion product
weighed 2.409 g. Calculate the percent O in the product and find the empirical formula
of the compound formed.