(Answered)-Which of the following reactions has the largest positive value - (2025 Updated Original AI-Free Solution

Question

1. Which of the following reactions has the largest positive value of ?S? per mole of O₂?at 25?C?

   2NO(g) + O2(g) ? 2NO2(g)

   2H2(g) + O2(g) ? 2H2O(g)

   2C(s) + O2(g) ? 2CO(g)

   C(s) + O2(g) ? CO2(g)

   2Mg(s) + O2(g) ? 2MgO(s)