Acids and Alkalis Chemistry 3 AQA
- Created by: nicola grantham
- Created on: 25-03-11 20:22
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- Arrhenius said that acids release hydrogen atoms in water.
- And that alkalis formed OH- ions in water.
- This only worked for acids and bases that dissolved in water.
- The idea wasn't immediately accepted because ammonia gas can react as a base even when it isn't dissolved in water.
- Back in the 1880's scientists didn't believe that molecules could ionise in water.
- Charged subatomic particles hadn't been discovered yet.
- Scientists couldn't imagine how Cl- could be different from Cl2 gas.
- Lowry and Br0nsted said acids are proton donors.
- Working separately they came up with definitions that work for soluble and insoluble bases:
- Acids release H+ ions - i.e. they're…
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