Be sure to answer all parts. The molar heats of fusion and vaporization of a certain...
Be sure to answer all parts. The molar heats of fusion and vaporization of a certain substance are 2.37 kJ/mol and 8.91 kJ/mol, and its melting point and boiling point are -165°C and -120°C, respectively. Calculate the entropy changes for fusion (solid to liquid) and vaporization (liquid to gas). AS fus J/K mol ASvap - J/K'mol
14.35 and 14.37 The molar heats of fusion and vaporization of mercury are 23.4 and 59.0 kJ/mol, respectively. Calculate the molar entropy changes for the solid-liquid and liquid- vapor transitions for mercury. At 1 atm pressure, mercury melts at-38.9 °C and boils at 357°C Use the values listed in Appendix 2 to calculate AGo for the following alcohol fermentation. 14.35 14.36 Certain bacteria in the soil obtain the necessary energy for growth by oxidizing nitrites to nitrates. 14.37 2NO2 +...
The enthalpy of fusion of cadmium at its normal melting point of 321 °C is 6.11 kJ mol? What is the entropy of fusion of cadmium at this temperature? ASfus = J mol-K-1 The molar enthalpy of fusion of solid cadmium is 6.11 kJ mol-1, and the molar entropy of fusion is 10.3 JK+mol-1. (a) Calculate the Gibbs free energy change for the melting of 1.00 mol of cadmium at 622 K. (b) Calculate the Gibbs free energy change for...
6. Sketch a properly-labeled plot of isobaric molar entropy vs. temperature for a typical pure substance X that exists as solid B below 100. K, solid a above 100. K, and has a melting point of 300. K and a boiling point of 400. K. Assume substance X has no residual entropy. 7. Calculate the standard molar entropy of fusion of substance X in the previous question if the standard enthalpies of formation of solid and liquid X are 147...
The molar enthalpy of fusion of solid bismuth is 11.0 kJ mol-1, and the molar entropy of fusion is 20.2 J K-1 mol-1. (a) Calculate the Gibbs free energy change for the melting of 1.00 mol of bismuth at 575 K. kJ (b) Calculate the Gibbs free energy change for the conversion of 5.12 mol of solid bismuth to liquid bismuth at 575 K. kJ (c) Will bismuth melt spontaneously at 575 K? (d) At what temperature are solid and...
For a certain substance, the heat of vaporization is 91.1 kJ/mol, and the absolute entropies of the gas and liquid phases are 162.6 and 84.6 J/K.mol, respectively, at the boiling temperature. Calculate the normal boiling point of tho sut entereint to thenearest esre)notation Your Answer: Answer
rams of ethanol (C2HSOH) from-120.0 C to 85.0 4. How much energy is needed to convert 25.0 g °C? 25 points molar heat capacity (solid) = 1 1 1 .46 J/mol*K molar heat capacity(liquid) 112.4 J/mol*K molar heat capacity(gas)- 78.28 J/mol*K heat of fusion 4.9 KJ/mol heat of vaporization = 38.56 KJ/mol melting point--114.1 C boiling point-783 C
calculate the change in thermal energy in kJ for a 637 g sample of acetone (molar mass = 58.08 g/mol) to change from -10.3 Celsius to 108 Celsius. given information: enthalpy of fusion: 5.73 kJ/mol enthalpy of vaporization: 31.3 kJ/mol melting point: -94.7 C boiling point: 56.1 C specific heat capacity for solid: 1.65 J/g Celsius specific heat capacity for liquid: 2.16 J/g C specific heat capacity for gas: 1.29 J/g C thank you!!
Use the information provided to calculate the quantity of heat (in kJ) required to convert 76.271 g of substance A from an initial temperature of -7.119ºC to a final temperature of 121.9ºC. Report your answer to the tenths place and do not include units. The molar mass of the substance is 28.93 g/mol. melting point of A = 1.299ºC heat of fusion = 10.43 kJ/mol boiling point of A = 109ºC heat of vaporization = 87.89 kJ/mol solid. liquid....
Ethanol melts at 159K and boils at 351K. The enthalpy of fusion is 5.02 kJ/mol, the enthalpy of vaporization is 35.56 kJ/mol, and the molar mass is 46.07 g/mol. The specific heats of solid ethanol is 0.97 J/g-K, for liquid ethanol it is 2.3 J/g-K, and for gaseous ethanol it is 1.9 J/g-K. How much heat (kJ) is needed to convert 215 g of liquid ethanol at 160 K to gaseous ethanol at 713 K?