Topic 3: Acids
- Created by: lois.michels
- Created on: 20-03-16 10:44
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- Topic 3: Acids
- Indigestion
- Hydrochloric acid is produced in the stomach in order to help digestion and kill bacteria.
- INdigesion remedies are containing substances that neutralise excess stomach acid.
- Neutralisation
- Acids are neutralised by metal oxides, metal hydroxides and metal carbonates to produce salts.
- Hydrochloric Acid produces chloride salts
- Nitric Acid produces Nitrate salts
- Sulfuric Acid produces sulfate salta
- Electrolysis
- Electrolysis is a process in which electrical energy decomposes compounds.
- The electrolysis of dilute hydrochloric acid produces hydrogen and chlorine.
- You can test a gas for hydrogen by holding a lit splint in the mouth of the test tube. If a squeaky pop is heard, the gas is hydrogen.
- You can test a gas for chlorine by holding a piece of damp blue litmus paper in the mouth of the tube. if the gas is chlorine the paper will turn red then turn white.
- Water can be decomposed by electrolysis to form hydrogen and oxygen.
- To test for oxygen, place a glowing splint in the mouth of the test tube. If it lights, the gas is oxygen.
- Electrolysis is a process in which electrical energy decomposes compounds.
- Chlorine
- Chlorine can be obtained from sea water by electrolysis.
- Chlorine is a toxic gas. This leads to potential hazards associated with its large-scale manufacture.
- Bleach is harmful to living things, but also reacts with many colored substances, converting them to colorless products. Chlorine bleaches are used in paper making.
- It is also used in the manufacture of plastics such as PVC.
- Indigestion
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