The normal boiling point of a 5-molal solution of sodium chloride in water is found to be 379.2 K. What will be the boiling point of the solution at 70kPa ? The vapour pressure of water is given by In P = 16.26205 3799.887 T - 46.854 where P is in kPa and T is in K. Assume that the relative vapour pressure is independent of temperature.

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“A liquid is heated at constant pressure in a smooth container to a temperature above its boiling point, at which it becomes superheated and metastable. Boiling chips are added and the liquid transforms irreversibly into a vapor phase. Why does the relationship Δs = Δh/T not describe the change in entropy for this particular transition?”

Problem 1.2: The equation below gives the boiling temperature of isopropanol as a function of pressure: B A - log10 P where T is in kelvin, P is in bar, and the parameters A, B, and Care A = 4.57795, B = 1221.423, C=-87.474. 1.6 Problems T = C₁ Obtain an equation that gives the boiling temperature in °F, as a function of In P, with P in psi. Hint: The equation is of the form B' A' - In P but the constants A', B', and C' have different values from those given above. T= 27

2. At a temperature of 400°C, the specific enthalpy of a water sample is 3100 KJ/kg. What is the phase of the water? a. Solid b. Solid-liquid mixture c. Subcooled liquid d. Saturated liquid e. Saturated mixture f. Saturated vapor g. Superheated vapor For the water in problem 2, determine the following: a. If saturated mixture calculate the quality, x = b. Determine the pressure

This table displays the vapor pressure of nitrogen at several different temperatures. Use the data to determine the heat of vaporization and normal boiling point of nitrogen.Temperature (K)                        Pressure (torr)65                                              130.570                                              289.575                                              570.880                                              102885                                              1718

The standard enthalpy of combustion of solid phenol, C6H5OH, is 3054 kJ mol-1 at 298 K and its standard molar entropy is 144.0 J K-1 mol-1 . Use these values, together to calculate the standard Gibbs energy of formation of phenol at 298 K.

A Stirling cycle is a thermodynamic cycle similar to the Carnot cycle and is defined by the following processes. -> 2: Isothermal expansion -> 3: isochoric cooling -> 4: isothermal heating -> 1: isochoric heating Solve the graph for  a Stirling cycle with the given information in which 50g of Ar (treated as an ideal gas) is isothermally expanded from 4L to 16L at a temperature of 700K. The sample is then undergoes isochoric cooling to 298K.  The sample is then isothermally compressed to 3L and finally undergoes isochoric heating back to 700K.