Formation of
the metal peroxide: 2Na + O2
Na2O2
2. With
hydrogen gas
The metal is heated as
hydrogen gas is passed over it. The metal hydride
is formed.
|
 |
|
2Na + H2
2NaH |
3.
With
water
Lithium reacts less quickly
than the other alkali metals. The reaction can be
quite explosive with the more reactive metals. A
piece of potassium will move quickly over he
surface of the water and a small, lilac flame is
sometimes seen. The metal hydroxide is formed and
hydrogen is released.
|
 |
|
2Na + 2H2O
2NaOH +
H2 |
4.
With halogens
The corresponding salt is
formed. The example shows sodium reacting with
chlorine gas.
|
 |
|
2Na + Cl2
2NaCl |
|
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