CM8001

– Carries many environmental repercussions:

1. Desalination requires pre-treatment and cleaning chemicals, e.g. Cl, HCl acid and hydrogen peroxide. Once they lose the ability to clean water, the chemicals are disposed. Chemicals find their way back to ocean which will poison the aquatic plants and animals.

2. Energy-consuming. Other water treatments are more energy-efficient.

3. Slow process

4. Not fail-safe. It can be harmful to human health as by-products of the chemicals used may get into the water and endanger people who drink it.

Water is a polar molecule with the positive charges on one side and negative on the other. As the vitamins are water-soluble, they are polar compounds as like dissolves like. Hence polar vitamins dissolve in polar aqueous solution.

Fat is non-polar. Hence, vitamins that are fat soluble are non-polar compounds.

a) Saving energy. Release less harmful chemicals/by-products into environment

b) Minimise NOx production by vehicles. Reduce environmental pollution

c) Minimise SOx from the burning of coal to provide electricity for the machines

d) Less energy required to continuously heat up the water. Less amount of pollutants released into atmosphere.

e) Less pollutants as the amount of transport required is reduced.

a) When burning coal, tiny particles are released into the air that do not absorb sunlight but reflect it instead, reducing visibility.

b) Around pH 4-5