Question

The stable form of tin at room temperature and pressure is whi When tin is used for construction in cold climates, it may gradually convert to its allot structure is non-metallic. Below is thermodynamic data for both forms: ite tin, which has a metallic crystal structure. , whose opic grey form Properties (at 298 K, 1 atm Molar enthalpy of formation (kJ/mole) Molar absolute entropy (J/(mole x K)) Molar heat capacity (constant P) (J/(mol x K) 25.77 Density (g/cc) Sn (gre 2.09 44.14 Sn (white 51.55 26.99 7.28 5.75 a. Calculate Δ , AS° and ΔΗΡ for the conversion of 1 mole tin from the white to the grey format 298 K) b. Calculate the value of Ar Go at -40.0°C. (Assume that Ar H° and Ar So are independent of temperature over this range.) ls the reaction spontaneous at this temperature? c. Will the conversion from white tin to grey tin be favored or opposed by increasing the pressure? Explain