JAMB - Chemistry (2004 - No. 32)
When steam is passed over red-hot carbon, the substances produced are
Hydrogen and trioxocarbonate (IV) acid
Hydrogen, oxygen and carbon (IV) oxide
Hydrogen and carbon (II) oxide
Hydrogen and carbon (IV) oxide
Explication
Water gas is produced when steam is passed over red-hot carbon. Water gas has the chemical formula as CO + H\(_2\)
The chemical reaction for the production of water gas is C(s) + H\(_2\)O(g) → CO(g) + H\(_2\)(g).