found this puzzling question in my friends worksheet.. not
in CxHy ..
In an experiment 10cm^3 of organic compound X in the gaseous
state was sparked in excess oxygen.20cm^3 of carbon dioxide and
5cm^3 of nitrogen were obtained among the products.All gas volumes
were measured at the same temperature and pressure.
which of the following compounds could be X?
1.) C2H7N
2.)C2H6N2
3.)C6H5NO2
4.)C3H5N
This question is in error. In every one of the 4 options,
combustion in excess oxygen would definitely produce several
species of oxides of nitrogen (NxOy), and not nitrogen gas.
If ignoring this critical error AND assuming the only
product of combustion containing nitrogen is N2 gas, then the
answer would be option 1, since by stoichiometry, combustion of
10cm3 of the compound produces 20cm3 CO2 implies 2 C present, and
5cm3 N2 produced implies 1 N present. The hydrogens in
the compound would simply be oxidized to water.
