Water- C3.2
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- Created by: mariana.serrao
- Created on: 18-01-16 20:03
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- Water
- Limescale- Caused by heating temporary hardwater
- Scum-Reaction of Magnesium and Calcium ions with sodium stearate (soap);
- Hydrochloric acid is a stronger acid- ionises more-producing more H+ ions
- Water Treatment
- Chlorine- safe to drink- kills microbes
- Water filter:
- carbon-ion-exchange¬containing resin and silver.
- silver discourages growth of bacteria
- Treatement: 1 -cage stops leaves; 2- settlement tank; 3-Aluminium sulfate and lime make particles clump so they are more easily filtered; 4- fine sand filter; 5- chlorine-kills bacteria; 6- pH corrected and checked;
- Hardwater
- Washing soda - sodium hydrogen carbonate
- ion exchange column- exchanges soft ions for hard ions
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