Chapter 14:Salt and identification of Ions
A salt is a compound that is formed when the hydrogen of an atom in an acid is replaced by a metal.
It is formed by the neutralisation reaction between an acid and a base
Precipitation
Titration
Metal and acid➡️ salt and water
zinc + sulphuric acid➡️ zinc sulphate+ Hydrogen
2. Metal oxide + acid ➡️ salt and water
Copper(II) oxide + sulphuric acid➡️ copper sulphate+ water
3• Metal hydroxide + acid ➡️salt and water
Potassium hydroxide+ hydrochloric acid ➡️ potassium chloride + water
4• Metal carbonate + acid ➡️salt+water+ carbon dioxide
Zinc carbonate+ nitric acid ➡️ zinc nitrate +water+ carbon dioxide
Metal and acid
Metal oxide and acid
Metal hydroxide and acid(titration)
Metal carbonate and acid
Precipitation
Soluble salt+ soluble salt ➡️ insoluble salt
Cations (postive ions) they travel to the negative terminal Cathode during electrolysis.
Anions (negative ions) they travel to the positive terminal Anode during electrolysis
Hydrogen | Pops with a lighted splinter |
---|---|
Oxygen | Relights a glowing splinter |
Carbon dioxide | Turns limewater milky |
Chlorine | Turns moist blue litmus red and then bleaches it |
Ammonia | Turns moist red litmus paper blue |
Sulphur Dioxide | Turns acidified potassium dichromate from yellow to green |
A salt is a compound that is formed when the hydrogen of an atom in an acid is replaced by a metal.
It is formed by the neutralisation reaction between an acid and a base
Precipitation
Titration
Metal and acid➡️ salt and water
zinc + sulphuric acid➡️ zinc sulphate+ Hydrogen
2. Metal oxide + acid ➡️ salt and water
Copper(II) oxide + sulphuric acid➡️ copper sulphate+ water
3• Metal hydroxide + acid ➡️salt and water
Potassium hydroxide+ hydrochloric acid ➡️ potassium chloride + water
4• Metal carbonate + acid ➡️salt+water+ carbon dioxide
Zinc carbonate+ nitric acid ➡️ zinc nitrate +water+ carbon dioxide
Metal and acid
Metal oxide and acid
Metal hydroxide and acid(titration)
Metal carbonate and acid
Precipitation
Soluble salt+ soluble salt ➡️ insoluble salt
Cations (postive ions) they travel to the negative terminal Cathode during electrolysis.
Anions (negative ions) they travel to the positive terminal Anode during electrolysis
Hydrogen | Pops with a lighted splinter |
---|---|
Oxygen | Relights a glowing splinter |
Carbon dioxide | Turns limewater milky |
Chlorine | Turns moist blue litmus red and then bleaches it |
Ammonia | Turns moist red litmus paper blue |
Sulphur Dioxide | Turns acidified potassium dichromate from yellow to green |