CM8001

Desalination it not widely used due to its energy consumption. It burns up a lot of energy than sourcing equivalent amount of fresh water from fresh water bottles. Also, the process is very expensive and the residue produced is saline brine which needs to disperse without causing environmental problem. It has an adverse effects on coastal/marine life.

For water-soluble vitamins, we expect it to be polar compounds as “like dissolve like”. Since water itself is polar,these vitamins that are water-soluble too are polar.
For fat-soluble vitamin, they are not polar thus those vitamins that are fat-soluble will not be polar compounds.

a) Compared to using of clothes dryer, hanging laundry helps to reduce the use of electrical energy. Therefore, less is needed for burning of fossil fuel for energy production that result in decrease of sulfur dioxide being produce. Overall, reduce acid rain.
b) There will be reduce amount of NOx emission from power plants, vehicles, fossil fuel combustion thus reduce acid rain.
c) Wastage of electricity should accumulate into larger load. As using electricity requires burning of fossil fuels, avoiding using dishwashers and washing machines for small loads will reduce the amount of sulfur dioxide being produce thus reduce acid rain.
d) This is to prevent heat loss so less energy is needed so as less needed for burning fossil fuel and sulfur dioxide produce is reduce which in turn reduce acid rain.
e) There will be reduce in the need for transportation which will reduce in the amount of NOx emission thus reduce acid rain.

a) The burning of coal leads to production of sulfur dioxide. Once in the air, sulfur dioxide can react with oxygen molecules to form sulfur trioxide.
These Sox react with water to form acids. e.g SO2 (g) + H2O (l) -> H2SO3 (aq)
Such molecules of acid can form tiny droplets. These droplets form aerosols that do not absorb sunlight and instead they reflect it hence reduce visibility.

b)Usual pH of rain is 5 to 6. Therefore 10 times increase in acidity result in range of about 4 to 5.