AP Chemistry – Continuous Learning Assignment 8
Name___________________________
1. The empirical formula of a hydrocarbon is to be determined by analyzing its combustion
products.
(a) The hydrocarbon burns completely, producing 7.2 grams of water and 7.2 liters
of CO2 at standard conditions. What is the empirical formula of the
hydrocarbon?
(b) Calculate the mass in grams of O2 required for the complete combustion of the
sample of the hydrocarbon described in (a).
2. Use simple structure and bonding models to account for each of the following.
(a) The bond length between the two carbon atoms is shorter in C2H4 than in C2H6.
(b) The H—N—H bond angle is 107.5° in NH3.
(c) The bond lengths in SO3 are all identical and are shorter than a sulfur – oxygen
single bond.
(d) The I3– ion is linear.