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The Chemistry Behind Swimming Pools |
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| WATER The Water Cycle Water in a Pool Water compared Pool Processes POOL PROCESSES CHEMISTRY IN OZONE DISINFECTION NEW IDEAS |
 Water is one of the most common compounds on Earth. It makes up around 71% of the Earth's surface. It is a compound of hydrogen oxide, H20, with a molar volume of 18mg/litre. Water is a clear, colourless, odourless liquid, which also makes up nearly x% of the human body. We can only survive for a few weeks without it. Water gives the appearance of being blue, this is because light is attenuated as it passes through, the blue wavelengths are attenuated least and so are reflected from the bottom of pools for example, this results in the blue colour.
Does water come straight from the tap? Water itself does not come from the tap, but its origin is part of a simple cycle called the water cycle. This has to meet different standards to water used for other uses. There is a saying that water flowing down the River Thames has been drunk by eight people before in its life. This is probably true. There is only a finite supply of water on Earth, but it has its own natural cycle which enables us to drink it whenever we like! |
