I need help arranging each group in order of decreasingstandard molar entropy. a) Mg metal, Ca metal, Ba metal b) Hexane(C6H14), benzene(C6H6), cyclohexane(C6H12). c) PF2Cl3(g),PF5(g), PF3(g)

Dillard

Dillard

Answered question

2020-11-26

I need help arranging each group in order of decreasingstandard molar entropy.
a) Mg metal, Ca metal, Ba metal
b) Hexane(C6H14), benzene(C6H6), cyclohexane(C6H12).
c) PF2Cl3(g),PF5(g), PF3(g)

Answer & Explanation

Isma Jimenez

Isma Jimenez

Skilled2020-11-27Added 84 answers

One thing to keep in mind is that entropy reduces in the following order: gas > liquid > solid a) All metals are solid, however as metal size grows, molar entropy rises from top to bottom in a group, leading to Ba > Ca > Mg.
b) Cyclohexane, benzene, and hexane (C6H14) (C6H12).
If all are liquid, the molar entropy falls as the compound's size rises.
Hexane comes before cyclohexane and benzene.
c) PF2Cl3(g), PF5(g), PF3(g) 
PF2Cl3 > PF5 > PF3

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