Two moles of a substance is cooled at the rate of 0.4 kJ min1 as shown in graph. Curve AB, B and C — AITS & Test Series Chemistry Question

Question

Two moles of a substance is cooled at the rate of 0.4 kJ min1 as shown in graph. Curve AB, B and C and curve CD represent respectively, the cooling of liquid, start of freezing, completion of freezing and cooling of the solid based on this data. The change in entropy of fusion in J mol1K1 is (A) 03.33 (B) 13.33 (C) 23.33 (D) 33.33 100 D 200 300 400 500 600 700 800 900 1000 A B 0 5 10 15 20 25 30 354045 50 55 Time (in minutes) Temperature (K) C