Nitrogen oxide is one of the pollutants in automobile exhaust and
can react with oxygen to form nitrogen dioxide according to
At 298 K the specific reaction rate is
or in parts per million,
(a) What is the half-life of 3000 ppm NO (a typical precontrol
auto exhaust value) in air? (b) What is the half-life of 1 ppm NO (a typical polluted atmosphere
value)?