Acids and Alkalis
- Created by: Jas_n
- Created on: 06-10-18 13:13
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- Acids and Alkalis
- Alkalis
- more than pH 7
- all alkalis have hydroxide ions in them
- OH-(aq) ions are produced when alkalis are added to water
- They ionise/dissociate in water
- The strength of an acid is the measure of the degree of ionisation.
- Strong alkalis
- Dissociate completely, meaning their molecules break up completely into ions when they dissolve in water.
- Strong acids
- Produce lots of/higher concentration of H+ ions
- very low pH
- Strong acids
- Produce lots of/higher concentration of OH- ions
- very high pH
- Dissociate completely, meaning their molecules break up completely into ions when they dissolve in water.
- Weak Alkalis
- Dissociate partially, meaning their molecules do not completely break up into ions in solutions
- high pH
- Produce less/ lower concentration of OH- ions
- They ionise/dissociate in water
- Acids
- less than pH 7
- all acids have hydrogen ions in them
- H+(aq) ions are produced when acids are added to water
- They ionise/dissociate in water
- The strength of an acid is the measure of the degree of ionisation.
- Strong acids
- Produce lots of/higher concentration of H+ ions
- very low pH
- Weak acids
- Dissociate partially, meaning their molecules do not completely break up into ions in solutions
- low pH
- Produce less/lower concentration of H+ ions
- They ionise/dissociate in water
- Neutral
- pH 7 is neutral
- these contain equal amounts of H+ ions and OH- ions
- Neutralisation
- Acid
- react to produce salt and water
- Base
- Alkalis
- more than pH 7
- all alkalis have hydroxide ions in them
- OH-(aq) ions are produced when alkalis are added to water
- Strong alkalis
- Dissociate completely, meaning their molecules break up completely into ions when they dissolve in water.
- Produce lots of/higher concentration of OH- ions
- very high pH
- Dissociate completely, meaning their molecules break up completely into ions when they dissolve in water.
- Weak Alkalis
- high pH
- Produce less/ lower concentration of OH- ions
- Strong alkalis
- Alkalis
- Base
- react to produce salt and water
- Base
- Acid
- Alkalis
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