Write the two chemical equations that describe the conversion of magnesium into magnesium oxide.
2Mg(s)+O2(g)->2MgO(s?)
First off, would MgO be a solid or gas?
And I have no idea what the 2nd equation could be.. Can anyone give me a hint?
MgO is a solid at room temperature.
I don't know what the second equation could be unless it is the conversion of Mg to Mg3N2, then add water to convert any Mg3N2 to MgO.
3Mg + N2 ==> Mg3N2
Mg3N2 + H2O ==> 3Mg(OH)2 + 2NH3
Mg(OH)2 + heat ==> MgO + H2O
The chemical equation you have provided is correct for the conversion of magnesium into magnesium oxide. In this equation, solid magnesium (Mg) reacts with gaseous oxygen (O2) to form solid magnesium oxide (MgO).
To answer your question, MgO (magnesium oxide) is a solid.
Regarding the second equation, since magnesium oxide is an ionic compound, it can dissociate into its constituent ions when it is dissolved in water. The equation for the dissociation of magnesium oxide in water can be written as follows:
MgO(s) + H2O(l) -> Mg2+(aq) + 2OH-(aq)
In this equation, solid magnesium oxide reacts with liquid water to form aqueous magnesium ions (Mg2+) and hydroxide ions (OH-).