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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 Mark this and return

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Answer is: temperature.

Balanced chemical reaction: MgO(s) + heat → Mg(s) + 1/2O₂(g).

This is endothermic reaction (ΔH > 0, chemical reaction that absorbs more energy than it releases). In endothermic reactions heat is reactant.

Because magnesium oxide (MgO) is in solid state, concentration, pressure and surfuce does not play the most important role in allowing this reaction to occur.

onyebuchinnaji

The only factor that plays the most important role in allowing this reaction to occur is temperature.

What is endothermic reaction?

Endothermic reaction is a type of chemical reaction in which the reactants absorb heat energy from the surroundings to form the products.

Reaction of the magnesium oxide

MgO(s) -----> Mg(s) + ½O₂

The magnesium oxide (MgO) is in solid state, thus, concentration and pressure will not favor forward reaction.

Only temperature will favour the forward reaction since heat react in the product side.

Learn more about endothermic reaction here:  https://brainly.com/question/6506846

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