Question

answer with explainations

EBB 160] -9 7. [a Tin (Sn) transforms from grey to white tin at 286 K. The heat of transformation (AH) has been measured as 2.1 kJ/mol. Timah (Sn) bertukar dari kelabu ke putih pada 286 K. Haba transformasi (AH) telsh diukur iaitu 2.1 kJ/mol Sn (grey, 286 K)Sn (white, 286 K) Calculate the entropy change of the system (Tin) Kirakan perubahan entropi dalam sistem tersebut (Timah). (10 marks/markah) Calculate the entropy change of the surroundings. Kirakan perubahan entropi persekitaran. (10 marks/markah) (m) Calculate the total entropy change of the universe (system + surroundings). Kirakan perubahan entropi keseluruh an semesta (sistem + persekitaran) (10 marks/markah)

Answer 1

= 2- k/mo Sn (white Endothurnic snition) Cgrey AHgys T AS Surr - 2100 /moe 2. kmole 286 k 286K 7.34 J mo AS 1 SaYY maE = 7-3 4 Silarly -HSury AS SYS By Calcettins the above nanner, We -7-34 Jma k7 ASSYS system decreaes in SurYandingd. means Sine AS increases in OS AS Sury 'Sys above phasc Transformat;on is chemical proles The but not physial process a Heuce AS SyS AS SurY AS uhivers AS SyS AS Sury AS SyS Sys AS Tote