Acids And Bases Flashcards
Acid+metal
Salt+hydrogen
Test for hydrogen gas: insert lighted splint into test tube, light splint is extinguished with a pop sound
Physical properties of acids
- turn blue litmus red
- acids conduct election because they have H+ ions in their solutions
Acid+base
Salt+water
This process is called neutralisation
Acid+carbonate
Salt+carbon dioxide+water
Test for carbon dioxide: bubble gas into lime water and a white precipitate is formed
Use of Sulfuric acid
Manufacture of agricultural fertilisers
Manufacture if detergent,paints,artificial fibres,dyes and plastics
Use in car batteries
Remove rust from iron and steel( as well as hcl)
Use of ethanoic acid and citric acid
Preserve food
Relationship of base and alkalis
All alkalis are soluble bases, but not all bases are alkalis
Oxides and hydroxides, base or alkali
Oxides are bases, hydroxides are alkalis
Physical properties of alkalis
Bitter taste
Soupy feeling.
Turn red litmus blue
Alkali with ammonium salt
Salt+ammonia+water
Test for ammonia: turn red litmus blue
Alkali+metal salt
Alkali reacts with so,unions of metal salts to form precipitates of metal hydroxides
Uses of calcium hydroxide and calcium oxide
Added to soil to neutralise acids
Use of magnesium hydroxide or aluminium hydroxide
Found in medicine such as antacid is used to relieve indigestion caused by acids
Use of magnesium hydroxide in toothpaste
Neutralise acids produced by bacteria on teeth
Use of sodium hydroxide or aqueous ammonia
Used in soaps and detergents
