Question

Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown below.

MgO(s) + 601.7 kJ mc017-1.jpg Mg(s) + ½O2(g)

Which factor plays the most important role in allowing this reaction to occur?
temperature
concentration
pressure
surface area

Answer 1

Hey buddy i think it's concentration

Answer 2

Answer: -

Temperature.

Explanation: -

The given chemical reaction is

MgO (s) + 601.7 kj → Mg(s) + ½ O₂(g)

From the given chemical equation we see that it is an endothermic reaction.

The heat is absorbed in this reaction.

For this heat to be absorbed, temperature of the reaction must be increased.

Thus we see temperature playing a dominant role in allowing this reaction to occur. Without temperature being raised, the reaction will not occur.