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Select all of the following equations that would most likely give a positive value for ΔS....

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Chemistry

Select all of the following equations that would most likelygive a positive value for ΔS. -- How do youdetermine the value of ΔS just by a reaction???

1. AgNO3 (aq) + KCl (aq) → AgCl (s) + KNO3(aq)

2. 2 NOBr (g) → 2 NO (g) + Br2 (g)

3. 2 Al (s) + 3 Cl2 (g) → 2 AlCl3 (s)

4. N2 (g) + O2 (g) → 2 NO (g)

5. 2 NO (g) + O2 (g) → 2 NO2 (g)

6. 2 NO2 (g) → N2O4 (g)

7. 2 NH3 (g) → N2 (g) + 3 H2(g)

8. 2 CH4 (g) → C2H4 (g) + 2H2 (g)

Answer & Explanation Solved by verified expert
4.1 Ratings (620 Votes)
AgNO3 aq KCl aq AgCl s KNO3 aq This reaction will not give positive entropy It is because 2 moles solution produces 1 mol of solid and 1 mol of solution Hence the disorder of the system decreases 2 NOBr g    See Answer
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