JAMB - Chemistry (1992 - No. 28)
Which of these statements is TRUE about carbon (IV) oxide?
it supports combustion
It is strongly acidic in water
It is very soluble in water
It supports the buring of magnesium to produce magnesium oxide
Εξήγηση
Carbon(iv)oxide does not burn, nor support the combustion of most substance .
The intense heat produced by burning magnesium,
However, decomposes Carbon(iv)oxide to release oxygen for the further oxidation of magnesium.
Carbon(iv)oxide dissolves in water to form trioxocarbonate(iv) acid ( soda water).