WHAT IS ACID RAIN?
Acid gases are
produced when fossil
fuels like coal and oil
are burned in power
and in our own homes.
Most of these acid
gases are blown into
the sky, and when
they mix with the
clouds it can cause
rain - or snow, sleet,
fog, mist or hail - to
become more acidic.
When CO2 reacts with water, carbonic acid is
CO2 (g)+H2O(l) H2CO3(aq)
When SO2 reacts with water, sulfurous acid is
SO2 (g)+H2O(l) H2SO3(aq)
When NO2 reacts with water, nitric acid is
Sulphur dioxide can be removed from power stations
chimneys but this process is expensive.
Use renewable energy like wind power, solar panels,
tidal power, and geothermal energy.
Fit catalytic converters to vehicle exhausts which remove
the nitrogen oxides.
Limit the number of vehicles on the roads and increase
Belt of ozone gas 15 to 50 kilometers above the earth's
surface where ozone is present in concentrations of a
few parts per million. This layer blocks (absorbs)
ultraviolet part of the solar radiation (which causes skin
cancer) from reaching the earth's surface.
The fragile shield of ozone is been damaged by chemicals
released on earth. The main chemicals that are depleting
stratospheric ozone are :
The “Greenhouse Effect”
The Earth’s surface thus receives energy
from two sources: the sun & the
– As a result the Earth’s surface is ~33 C warmer than it would
be without an atmosphere
Greenhouse gases are transparent to
shortwave but absorb longwave radiation
– Thus the atmosphere stores energy