Flashcards
Chlorination
Cards in this deck (11)
- 1Why do under-developed countries often have epidemics of these?Because they can't access clean water easily - they have to walk far and even if they do, the water may not be clean.
- 2What caused the increase in life expectancy in many developed countries?The ability to supply clean water
- 3What potential problems does chlorination have?Chlorinated hydrocarbons created
Chlorine is a toxic gas - 4What are chlorinated hydrocarbons?The chlorine reacts with organic compounds in the water to form these. They are carcinogenic
- 5If these are produced, why is chlorination still used?The risk is tiny compared to the mass epidemic that could occur if it wasn't added that could kill many
- 6What are dangers of chlorination in manufacture or when being added?As a gas, it is poisonous
As a liquid, it can cause chemical burns.
Any accidents can be very serious or fatal - 7What form of chlorine must be used and how is this obtained?Pure chlorine - not in compounds
Oxidisation of hydrogen chloride - 8Why can't chlorine compounds be used?They have different properties to pure chlorine therefore do not have the ability to kill microorganisms
- 9What does chlorination do?Kill disease causing microorganisms
If the correct amount is added, it remains to kill bacteria that can enter after the treatment was added
Prevents algal growth
Stops discolouring and gets rid of bad tastes - 10What diseases can unclean water cause?Typhoid
Dysentery
Cholera - 11What is an epidemic?When lots of people get a disease so it spreads easily through many people.
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- GCSE Chemistry Flashcards on Chlorination, created by Alice Hathaway on 18/05/2016.
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- Alice Hathaway
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