Chemistry Practice Problems Entropy Practice Problems Solution: Given the data, calculate ΔSvap for each liquids. ...

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Solution: Given the data, calculate ΔSvap for each liquids. (ΔSvap = ΔHvap/T, where T is in K)CompoundNameBP (oC)ΔHvap (kJ/mol) at BPC4H10ODiethyl ether34.626.5C3H6OAcetone56.129.1C6H6Benzene79.830.8CHCl3Chloroform60.829.4C2H5OHEthanol77.838.6H2OWater10040.7

Problem

Given the data, calculate ΔSvap for each liquids. (ΔSvap = ΔHvap/T, where T is in K)

 Compound Name BP (oC) ΔHvap (kJ/mol) at BP C4H10O Diethyl ether 34.6 26.5 C3H6O Acetone 56.1 29.1 C6H6 Benzene 79.8 30.8 CHCl3 Chloroform 60.8 29.4 C2H5OH Ethanol 77.8 38.6 H2O Water 100 40.7

Entropy

Entropy

Q. Which reaction is most likely to have a positive ΔSsys?a) SiO2(s) + 3 C(s) → SiC(s) + 2 CO(g)b) 6 CO2(g) + 6 H2O(g) → C6H12O6(s) + 6 O2(g)c) CO(g) + C...

Solved • Thu Jan 03 2019 09:30:46 GMT-0500 (EST)

Entropy

Q. Arrange the gases – F2, Ar, and CH3F – in order of increasing standard entropy (S˚) at 298 K.

Solved • Thu Jan 03 2019 09:30:46 GMT-0500 (EST)

Entropy

Q. Use standard entropies to calculate ΔS˚rxn for the balanced chemical equation: 2 PCl3(l) + O2(g) →  2 POCl3(l)SubstanceΔS˚ (J/mol•K)POCl3(l)222.5POCl3...

Solved • Thu Jan 03 2019 09:30:46 GMT-0500 (EST)

Entropy

Q. Determine the sign of ΔSsys in each of the following processes: dry ice subliming

Solved • Thu Jan 03 2019 09:30:40 GMT-0500 (EST)