1
Q
main constituent of natural gas
A
methane
2
Q
complete combustion
A
alkane + O2 -> water + CO2
3
Q
Incomplete combustion producing CO
A
Alkane + O2 -> water + CO
4
Q
Incomplete combustion producing soot
A
Alkane + O2 -> water + C
5
Q
danger of CO
A
very poisonous. reduces blood capacity to carry oxygen
6
Q
other harmful substances caused by burning fossil fuels
A
SO2: sulfur impurities in coal and oil. burns making sulfur dioxide. SO2 reacts with water making sulfurous acid in acid rain damaging limestone buildings
NOx: nitrogen oxides form in internal combustion engines because temperatures are very high. also contributes to acid rain as nitric acid
