Oxides of nitrogen react with water to form nitric acid (NO3-).
Carbon dioxide (CO2) reacts with water to form carbonic acid (HCO3-).
Chlorine (CI2) reacts with water to form Hydrochloric acid (CI-).
Some other gases that are being released in the air are carbon dioxide, carbon monoxides, chlorofluorocarbons, hazardous air pollutants, lead, nitrogen oxides, ozone, particulate matter, sulfur dioxides, and volatile organic compounds. Carbon dioxide is released by burning coal, oil, and natural gas. If you inhale carbon dioxide, since it is toxic, it can cause you to breathe more than usual, unconsciousness, and other serious health problems. Carbon monoxide is released by burning gasoline, oil, and wood. When carbon monoxide enters your body, it goes into the bloodstream. When this happens, it will slow down the delivery of oxygen to the rest of the body, causing dizziness, headaches, and fatigue. Chlorofluorocarbons (CFC's) are the chemicals that are used in industry, refrigeration, air conditioning systems, and consumer products. Whenever CFC's are released into the air, they reduce the stratospheric ozone layer. The stratospheric ozone layer protects Earth's surface from the harmful rays of the sun. Hazardous air pollutants (HAPS) are released into the air by sources such as chemical plants, dry cleaners, printing plants, and motor vehicles (cars, trucks, buses, and planes). HAPS can cause serious health problems like cancer, birth defects, nervous system problems, and deaths that are all due to people accidentally letting them go into the air. House and car paint as well as the manufacturing of lead batteries, fishing lures, certain parts of bullets, some ceramic ware, water pipes, and fixtures, release lead. In young children, lead can cause nervous system damage and learning problems. Nitrogen oxides are released into the air by burning fuels such as gasoline and coal. When nitrogen oxides combined with Volatiles Organic Compounds (VOCs), they can cause breathing difficulty in people who have asthma, coughs in children, and general illness in your respiratory system.