Period 3 Flashcards
1
Q
Na20 ph
A
14
2
Q
Na20 structure
A
Ionic
3
Q
Na20 + water équations
A
Na20 + H20—>2NaOH(aq)
Then dissolves
O2- + H20 —> 2 OH-
4
Q
Na20 + acid equation
A
Na20 + 2H+—>2Na+ + H20
5
Q
What two oxides are basic
A
Mg0
Na20
6
Q
What pH does MgO have
A
10
7
Q
P4O10 ph
A
0
8
Q
SO2 pH
A
3
9
Q
SO3 pH
A
0
10
Q
MgO structure
A
Ionic
-higher mp than Na20 due to smaller atomic radius and higher nuclear charge with similar shielding
11
Q
MgO + water equations
A
Mg0 + H2O—>Mg(OH)2 (aq)
Some dissolve in water(less than Na20 due to higher lattice enthalapy
02- + H20–> 20H-
12
Q
What oxide is amphoteric
A
Al203
13
Q
MgO reaction with an acid
A
MgO + 2H+—>Mg2+ + H2O
14
Q
Al203 + acid
A
Al203 + 6H+ —>2Al3+ + 3H2O
15
Q
Al2O3 + alkali
A
Al2O3 + 2OH- + 3H20–>2 Al(OH)4-
16
Q
SiO2 + alkali
A
SiO2 + 2OH- —> Si03 2- + H2O
