Stellenbosch EXAM-STYLE QUESTION UNIVERSITY IYUNIVESITHI UNIVERSITEIT (a) Solid elemental sulfur exists in two allotrope

[answerhappygod]

Stellenbosch Exam Style Question University Iyunivesithi Universiteit A Solid Elemental Sulfur Exists In Two Allotrope 1 (168.9 KiB) Viewed 42 times

Stellenbosch EXAM-STYLE QUESTION UNIVERSITY IYUNIVESITHI UNIVERSITEIT (a) Solid elemental sulfur exists in two allotropes, a-sulfur (rhombic) and B-sulfur (monoclinic). The molar entropies of the two allotropes are 31.8 J K-¹ mol-¹ for a- sulfur, and 32.6 J K-¹ mol-¹ for B-sulfur (at 298 K). The enthalpy change for the conversion of a-sulfur to B-sulfur is 330 J mol-¹. For the purposes of this question, you may assume that these values are independent of temperature. By computing the entropy change of the Universe for the above process, determine which allotrope is the stable form at 50 °C. (b) Determine the temperature at which the two allotropes are in equilibrium, and the allotrope which is favoured at temperatures higher than this. [412.5 K] c) By considering a small set of atoms/molecules explain whether the entropy increases/decreases/stays the same when ... Science | EyeNzululwazi ngezeNdalo | Natuurwetenskappe forward toge sonke siya p saam vorent