AQA C2 2.5 acids,salts and bases
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?- Created by: Jesskaa
- Created on: 31-03-13 18:44
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- Acids, bases and salts. c2.2.5
- Acids
- Is a substance with a pH less than 7.
- Form H+ ions in water.
- State symbols
- (s) - solid
- (l) - liquid
- (g) - gas
- (aq) - aqueous - dissolved in water.
- Bases
- Is a substance with a pH greater than 7
- An Alkali is a base that dissolves in water.
- Alkalis form OH- ions in water.
- Acid + Base = Salt + water
- H+ + H- = H20
- Acids
- Is a substance with a pH less than 7.
- Form H+ ions in water.
- Acids and Bases neutralise each other.
- Acids reacting with metals.
- Acid + Metal = Salt + Hydrogen
- Acid + Metal Oxide = Salt + Water
- These are neutralisation reactions.
- Acid + Metal Hydroxide = Salt + Water
- These are neutralisation reactions.
- Acid + Metal Hydroxide = Salt + Water
- Making salts
- You can make soluble salts using a metal or an insoluble base.
- You can make soluble salts using an alkali.
- Making insoluble salts - Precipitation reactions.
- Acids
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