One mole of a substance is cooled at the rate of `0.4 kJ min^(-1)` as shown in the graph. Curve `AB`
Channel: Doubtnut
Date: 02/08/2020

One mole of a substance is cooled at the rate of `0.4 kJ min^(-1)` as shown in the graph. Curve `AB`, points `B` and `C` and curve `CD` represent respectively, the cooling of the liquid, start of freezing, completion of freezing and cooling of the solid based on this data. The entropy of fusion in `J molK^(-1)` is :