Question

Predict the formula and name the oxide of the following
K AL C

Answer 1

K20 pottasium oxide
Al203 aluminium oxide
Co2 carbondioxide

Answer 2

Explanation:

1) When potassium reacts with oxygen it from potassium oxide:

$4K(s)+O_2(g)\rightarrow 2K_2O(s)$

2) When Aluminium reacts with oxygen it from aluminium oxide:

$6Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)$

3) When carbon reacts with oxygen it from carbon-dioxide:

$C(s)+O_2(g)\rightarrow CO_2(g)$

Also when the carbon reacts with limited amount of oxygen it form carbon monoxide:

$C(s)+O(g)\rightarrow CO(g)$