Question

Which of the following has the lowest value of absolute entropy per mole? Conditions are as defined in each case.


A) solid sodium at 30 oC
B) gaseous sodium at 900 oC and 0.5 atm
C) gaseous sodium at 900 oC and 1 atm
D) liquid sodium at 100 oC
E) a solid solution of sodium in potassium at 30oC

Answer 1

Question #77044, Chemistry / Physical Chemistry

Which of the following has the lowest value of absolute entropy per mole? Conditions are as defined in each case.

A) solid sodium at 30 °C

B) gaseous sodium at 900 °C and 0.5 atm

C) gaseous sodium at 900 °C and 1 atm

D) liquid sodium at 100 °C

E) a solid solution of sodium in potassium at 30°C

Answer:

Absolute entropy per mole for same compound in different states: the highest for gaseous state, the lowest for solid state. The entropy also increases as the pressure or concentration becomes smaller. So,

B) gaseous sodium at 900 °C and 0.5 atm

the lowest value of absolute entropy per mole

Answer provided by AssignmentExpert.com