Ibuprofen, a non-steroidal anti-inflammatory drug d) Compound B (ibuprofen) is known to melt at 74.0C with an enthalpy of melting of Hm=25.5kJmol1. Assuming that Hm and Sm (the change in entropy of melting) are independent of temperature, determine Sm, and also determine the Gibbs free energy of melting, Gm, at room temperature (25C). Additionally, discuss the significance of the sign of each of the three thermodynamic parameters i.e. Hr,Sr and Gr. (2+3marks)