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Which reaction is most likely to have a positive ΔSsys? Which reaction is most likely to have a positive ? 3NO2(g)+H2O(l)→2HNO3(l)+NO(g) CO(g)+Cl2(g)→COCl2(g) 6CO2(g)+6H2O(g)→C6H12O6(s)+6O2(g) 4NH3(g)+5O2(g)→4NO(g)+6H2O(g)

Roger Moore

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Bethany Evans on December 13, 2018

For ΔS to be positive of the gas molecules of the products must be greater than that of the reactants of this lead to an increase in the disorder of the system:3 NO₂(g) + H₂O(g) → 2 HNO₃(l) + NO(g) 1 gas - gas 3 = - 2 gas molCO(g) + Cl₂(g) → COCl₂(g)1 gas 2 gas = -1 gas mol6 CO₂(g) + 6 H₂O(g) → C₆H₁₂O₆(s) + 6 o₂ (g)6 - gas 12 gas = - 6 gas mol4 NH₃(g) + 5 o₂ (g) → 4 NO(g) + 6 H₂O(g)10 gas - 9 gas = 1 gas molThis one will have positive ΔS


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