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)