Q26 Of 2005 Chem Hsc Paper... (1 Viewer)
- Thread starter studymon
- Start date
brenton1987
Member
- Joined
- Jun 9, 2004
- Messages
- 249
- Gender
- Undisclosed
- HSC
- N/A
Lake - oil and petrol from boats can be removed in a number of ways based on the different properties of the compounds.
Distillition will remove them based on their boiling point but it is an energy intensive process so it is expensive.
They can be separated because of their immiscibility within eachother. They will separate into two layers allowing the lower layer to be run off easily.
Boat fuel is less dense than water so it could just be burnt off but that is very polluting.
Vegetable patch - pollutants will be soluble nitrate and phosphate fertilisers so a phase change method is required (distillation). Or ion exchange of the nitrates and phosphates for other ions. Ion exchange would require specialised equipment which could be expensive.
Theres plenty of other ways to clean the water. Filter --> distill --> reverse osmosis or Precipitation --> filter --> solvent separation --> distill.
Distillition will remove them based on their boiling point but it is an energy intensive process so it is expensive.
They can be separated because of their immiscibility within eachother. They will separate into two layers allowing the lower layer to be run off easily.
Boat fuel is less dense than water so it could just be burnt off but that is very polluting.
Vegetable patch - pollutants will be soluble nitrate and phosphate fertilisers so a phase change method is required (distillation). Or ion exchange of the nitrates and phosphates for other ions. Ion exchange would require specialised equipment which could be expensive.
Theres plenty of other ways to clean the water. Filter --> distill --> reverse osmosis or Precipitation --> filter --> solvent separation --> distill.
matorm
Member
There would also be sediments released into the water from the logged forest...
Filtration processes could be used for that...
Does the assess part mean to state the most suitable method of purification as well as other methods...???
Try a success one chemistry book and there will be a lengthy answer to many possible answers to this question...
Very handy
Filtration processes could be used for that...
Does the assess part mean to state the most suitable method of purification as well as other methods...???
Try a success one chemistry book and there will be a lengthy answer to many possible answers to this question...
Very handy