When burning sulfur with a mass of 1 g, 9.28 kJ of heat was released. Make a thermochemical equation of the reaction.

Let’s find the amount of sulfur substance:

n (S) = m (S) / M (S) = 1/32 = 0.03125 mol;

Let’s find how much heat will correspond to the combustion of 1 mole of sulfur:

Q = 9.28 / 0.03125 = 293.76 kJ;

The required thermochemical equation:

S + O2 = SO2 + 293.76 kJ



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