Bases
- Created by: Ella12344
- Created on: 05-12-16 17:16
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- BASES
- DEFINITION
- Proton, H+ acceptors
- Neutralise Acids
- STRENGTH
- Strong Bases the forward reaction is favoured, nearly all the base dissociates in water
- Lots of OH- ions released
- Strong Bases the forward reaction is favoured, nearly all the base dissociates in water
- NEED TO KNOW
- NaOH - Sodium hydroxide
- Alkalis
- NH3 - Ammonium
- Alkalis
- NH3 - Ammonium
- Amines are bases
- Metal oxides eg MgO are bases
- Metal Hydroxides are bases
- NaOH - Sodium hydroxide
- DEFINITION
- Bases that are soluble in water are known as alkalis
- Release OH- ions in solution
- DEFINITION
- Proton, H+ acceptors
- Neutralise Acids
- Weak Bases only ionise slightly in water, so only a small amount of the base dissociates
- Few OH- ions are released. Written as a reversible reaction.
- STRENGTH
- Strong Bases the forward reaction is favoured, nearly all the base dissociates in water
- Lots of OH- ions released
- Strong Bases the forward reaction is favoured, nearly all the base dissociates in water
- Ammonia is a gas that dissolves in water to form a weak alkali solution
- NH(aq)+H2O = NH4+(aq)+OH-(aq)
- Weak because only a small proportion of the dissolved NH3 reacts with water, shown by equilibrium sign
- NH(aq)+H2O = NH4+(aq)+OH-(aq)
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