State rhombic and monoclinic denoted a and b

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Reference no: EM13193868

Two solid forms of elemental sulfur (S8) are rhombic and monoclinic, denoted A and B, respectively. For the transformation S8(s,A) --> S8(s,B), dH* = 330 J/mol and dS* = 80 J/mol*K.

If dH and dS are independent of T, which form of S8 is more stable at 1atm and 298K?

At what temperatures is S8(s,A) the more stable form under 1atm pressure?

At what pressures is S8(s,B) the more stable form when T = 298K?

Desnities:

S8 A = 2.07 gm/cm^3

S8 B = 1.96 gm/cm^3

Reference no: EM13193868

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