المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : ممكن حل المسأله



sooom
05-01-2011, 04:42 AM
Ex: 1 gram of water at 20c is converted into ice at-10c at constant pressure.
the heat capacity at 1 gram of water is 4.2 j/g.k and that of ice is2.1 j/g.k
. the heat of fusion of ice at 0c =335 j/g.
calculate the total change in entropy of the system?

حافظ جاد
05-01-2011, 07:23 AM
S=Q/T
S= 1x4.2x20+1x2.1x10/273=o.385 j/k