properties of oxides, acid rain and ocean acidification

most basic

Na2O

2nd most basic

MgO

ampotheric (can act either as an acid or a base)

Al2O3

4th most acidic

SiO2

3rd most acidic

P4O6
P4O10

2nd most acidic

SO2
SO3

most acidic

Cl2O
Cl2O7

Na2O + H2O

NaOH

MgO+H2O

Mg(OH)2

P4O10 + H2O

H3PO4

SO2 + H2O

H2SO3

Cl2O + H2O

HClO

SO3 + H2O

H2SO4

acid rain

CO2 + H2O -> H2CO3 (carbonic acid)
products of oxides with water become more acidic across period 3. nitrogen and sulfur oxides make water more acidic than carbon
volcanos are a natural source of oxides of nitrogen and sulfur dioxide. SO2 also comes from sulfur impurities when fossil fuels are burnt (S + O2 -> SO2)
oxides of nitrogen - in the high temperatures of a car engine nitrogen and oxygen in the atmosphere react to to produce nitrogen oxide. this then reacts with oxygen again to produce nitrogen dioxide
1) N2 + O2 -> 2NO
2) 2NO + O2 -> 2NO2

the chemistry behind the acidification caused by SO2

SO2 + H2O -> H2SO3
2H2SO3 + O2 -> H2SO4

the chemistry behind the acidification caused by NO2

2NO2 + H2O -> HNO2 + HNO3
2HNO2 + O2 -> 2HNO3 (nitric acid)

ocean acidification

CO2, SO2 and NO2 enter oceans in acid rain and these compounds react with water as aforementioned