We’re being asked topredict how the entropy of each substanceisinfluenced by the offered process.
You are watching: Predict how the entropy of the substance is affected
Recontact thatentropyis thedegree of chaos or disorder of a systemand also that it counts on the following:
1. Phase:Thegas phase has the highest possible entropy, adhered to by the liquid, and also then thesolid phase through the lowest entropy.
Gas > Liquid > Solid
2. Complexity:More elementsin the compound leads togreater entropy.
Ex. NO3(g)<4 elements>has actually higher entropy than NO2(g)<3 elements>.
3. Mass:Thebetter the mass, then thegreater the entropy.
For a offered procedure,entropy (ΔS) will certainly either increase or decrease.
Remember thatphase changes result in a readjust in entropy:
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Predict just how the entropy of the substance is affected in the following processes:
a) Ar(l) → Ar(g)
b) Cu(s, 300 K) → Cu(s, 800 K)
c) H2O (g, 75 Torr, 300 K) → H2O(g, 150 Torr, 300 K)
Which of the adhering to reactions have actually a positive ΔSrxn? Check all that apply.
a) A(s) + B(s) → C(g)
b) A(g) + B(g) → C(g)
c) 2A(g) + B(g) → 4C(g)
d) 2A(g) + B(g) → C(g)
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