period 3 and their oxides

Question 1

what is the rule for when period 3 elements react with oxygen

Answer 1

standard oxygen contains compounds are formed, most form a white product,

Question 2

how does NA2O react with water

Answer 2

Na2O +H2O -> 2Na+ + 2OH-

Question 3

MgO reaction with water

Answer 3

MgO + H2O -> Mg(OH)2

Question 4

reaction of Al2O3 with water

Answer 4

there is no reaction as aluminium oxide Is insoluble

Question 5

reaction of SiO2 with water

Answer 5

no reaction as SiO2 is insoluble

Question 6

reaction of P4010 with water

Answer 6

P4O10 + 6H2O -> 4H3PO4

Question 7

reaction of SO2 with water

Answer 7

SO2 + H2O -> H2SO3

Question 8

reaction of SO3 with water

Answer 8

SO3 + H2O -> H2SO4

Question 9

how do the melting point changes of the period 3 oxides change along the period

Answer 9

increases till MgO then decreases

Question 10

how do the period 3 oxides react with acid and bases

Answer 10

the metals act as bases so will be a neutralisation reaction

Question 11

what are the reactions for Al2O3 with an acid and a base

Answer 11

Al2O3 + 3H2SO4 -> Al(SO4)3 + 3H2O

Al2O3 + 2NaOH -> 2NaAl(OH)4

Question 12

what are the reactions of silicon, sulphur and phosphorus oxides with a base

Answer 12

all form a compound with Na
so2 forms Na2SO3
SO3 forms NaSO4
phosphorus oxide forms Na3PO4
SiO2 forms Na2SiO3
all form water