10.5 Effect Of Water In Oxides And Hydroxides Of Period 3 Elements Flashcards
What is commonly used in indigestion remedies?
Magnesium oxide and magnesium hydroxide because the neutralise axis acid in the stomach
How does aluminium oxide react?
It does not react how to solve in water because an oxide layer is protecting it but it does react with acid and alkaline solutions.
Reaction of aluminium oxide with hot concentrated alkali
Al2O+2NaOH+3H2O—>2NaAl(OH)4 (aq)
What are amphoteric compounds
The compound that can act as both acids and bases. Aluminium oxide is an amphoteric acid.
How does silicon dioxide react?
Insoluble in water
It is a static oxide so it will react in hot concentrated alkali
SiO2(s)+2NaOH+—>Na2SiO3(aq)[sodium silicate]+H20
How does phosphorus oxide react?
Reacts vigourously and dissolves in water to form an acidic solution
How do the oxides of sulphur react?
Put dissolve in water forming acidic solutions
Sulphur dioxide forms sulphuruos acid (H2SO3)
Sulphur Trioxide reacts to form sulphuric acid H2So4
Tahani melting points of the giant ionic and coal and structures lead to the use of
Monoxide to the inside of furnaces
Aluminium oxide and silicon dioxide to make ceramics designing to high temperature and provide electrical and installation .
How do the covalent bonded non-metal oxides of phosphorus and sulphur react in water
They dissolve and react in water to form acidic solutions. The acid molecules formed donates H+ ions to water molecules
H2SO4+H2O+H3O+HSO4
How do the ionic chloride of sodium and magnesium react with water?
They do not react because the polar molecules of water are attracted to the ions dissolve when the chloride by breaking down the giant ionic structure
What are the dissolved ions in water called?
Hydrated irons
How do the rest of the chlorides of period three react with water
Give off white fumes of hydrogen chloride gas. Apart from aluminium they also leave behind oxides of the element that are white precipitates which dissolves in water
How does aluminium chloride make the solution more acidic?
The damage of aluminium chloride breakdown and aluminium and chlorine ions are present in the solution. each aluminium iron is hydrated and causes a water molecule bonded to it loose an hydrogen iron.
