Under conditions of constant pressure,for which of the following reactions is the magnitude of pressure-volume work going to be greatest? A)BaO(s)+ SO₃(g)→ BaSO₄(s) B)2NO(g)+ O₂(g)→ 2NO₂(g) C)2H₂O₂(l)→ 2H₂O(l)+ O₂(g) D)2KClO₃(s)→ 2KCl(s)+ 3O₂(g) E)H₂(g)+ Cl₂(g)→ 2HCl(g)

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Quizplus · Accepted Answer

The magnitude of pressure-volume work is given by the equation w = -PΔV, where P is pressure and ΔV is the change in volume. The reaction that will result in the greatest change in volume will have the greatest magnitude of pressure-volume work. From the given reactions, option D involves the formation of three moles of gas from two moles of solid and one mole of gas, resulting in the greatest increase in volume and therefore the greatest magnitude of pressure-volume work.

Under Conditions of Constant Pressure,for Which of the Following Reactions