Showing posts with label chemical compound. Show all posts
Showing posts with label chemical compound. Show all posts

Saturday, November 17, 2012

How does Water exist in Air?

Water molecules in the air exist like sand, salt and sugar molecules exist in a salt-sand-sugar mixture. The compound H2O is free and stands alone like a component in a physical mixture not as a component in a chemical mixture
A mechanical Mixture
Each component stands apart
Source - tojojoling.blogspot.com
Each piece stands apart
Source - cookteen.com
In a mechanical mixture, each component exists separately from every other component.
In a mechanical mixture, each component can be separated from all other components through a process akin to separating all the pasta or the red candy.
Air is a mechanical mixture of elements and compounds
Elements in the air include:
Gas
Ratio compared to Dry Air (%)
Chemical Symbol
By volume
By weight
Oxygen
20.95
23.20
O2
Nitrogen
78.09
75.47
N2
Hydrogen
0.00005
~ 0
H2
Argon
0.933
1.28
Ar
Neon
0.0018
0.0012
Ne
Helium
0.0005
0.00007
He
Krypton
0.0001
0.0003
Kr
Xenon
9 10-6
0.00004
Xe
Source - http://www.engineeringtoolbox.com/air-composition-d_212.html
Compounds in the air include:
Water, Carbon Dioxide, Sulfur dioxide, Methane, Nitrous oxide, Ozone, Nitrogen dioxide, Iodine, Carbon monoxide and Ammonia
Water exists in the air in 2 forms
The water in air exists in two states: about 2% exists in liquid form while the remaining approx 98% exists in liquid form.
The task of extracting water from the air is mostly a task of extracting the vapor form of water from the air.