QUESTION 4 a) A process involving an ideal gas is carried out in which the temperature changes (AT) at constant volume (V). Consider the following two processes Process A: for a fixed value AT, the mass of the gas (m) is doubled. Process B: the process is repeated with the same initial mass but AT is doubled. State which process has a greater change in entropy (AS). Explain your answer in terms of AS for each process. b) One mole of N2 at 20.5 °C and 6.00 bar undergoes a transformation to the state described by 145 °C and 2.75 bar. Calculate change in entropy (AS) (in unit J K-'). (Assume ideal gas behaviour). Given that the molar heat capacity at constant pressure (Cp.m) [J mol·! K-']= 30.81-11.87×10-3 – + 2.3968×10-5 10-5- 1.0176×10-8 T3 K K2 K3

QUESTION 4 a) A process involving an ideal gas is carried out in which the temperature changes (AT) at constant volume (V). Consider the following two processes Process A: for a fixed value AT, the mass of the gas (m) is doubled. Process B: the process is repeated with the same initial mass but AT is doubled. State which process has a greater change in entropy (AS). Explain your answer in terms of AS for each process. b) One mole of N2 at 20.5 °C and 6.00 bar undergoes a transformation to the state described by 145 °C and 2.75 bar. Calculate change in entropy (AS) (in unit J K-'). (Assume ideal gas behaviour). Given that the molar heat capacity at constant pressure (Cp.m) [J mol·! K-']= 30.81-11.87×10-3 – + 2.3968×10-5 10-5- 1.0176×10-8 T3 K K2 K3

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Q1/ A gas is mixed with 5 moles of B gas. The temperature, pressure and volume for mixture's final state is (25°C , 3atm, 57.1IL) respectively. What is the value entropy AS ?Assume that the gases are perfect gases.
For a certain reaction changeH֯ =-83.5 kJ and changeSͦ =-148 j/K. If the values of changeH֯ and changeSͦ can be assumed to be constant for all temperatures, the temperature range over the reaction is spontaneous is?
The entropy of a mixture of N2 and O2 gases at certain temperature and volume is equal to the sum of both in the pure gas at the same temperature and volume
2) A Carnot engine working between 500 K and 298 K produces 1500 joules of work at every cycle. a) Calculate the efficiency of this Carnot engine b) How much heat is absorbed at 500 K? c) How much heat is given off at 298 K? d) What is the total entropy for the whole cycle? e) How much heat should the system absorb in order to produce 2500 J of work.
Consider two separate containers: container A holds 65.3 g of carbon dioxide gas, container B holds 48.2 g of oxygen gas. The pressure of both gases is 1 bar and the temperature is 298.15 K. Both gases can be treated as ideal gases. Parta) Determine the sum of the entropies of the gases in both separated containers. Part b) Calculate the total entropy of the gas mixture, which is obtained after mixing both gases in one container, while maintaining a constant temperature and pressure. Part c) The gas mixture from part b) is expanded in an isobaric process until its volume has increased by a factor of 2.5. Calculate the entropy of the gas mixture after this process is completed.
i need help with physical chemistry. Need to confirm if phi can relate to gibbs free energy. Its for 70 the other is to show the equation
Discuss the diagram of the molar Gibbs free energy (or chemical potential) versus temperaturebelow for a pure substance. Why are there three curves? Why do they slope downward? Does thegraph identify any interesting temperatures? Are some segmentsof the curves more important/interesting than others? Feel free to redraw and label the diagram.
Standard molar entropy: Has a similar unit with specific heat capacity Has a similar unit with enthalpy of formation Can be negative like enthalpy of formation Has a value of zero for elemental state None of the above
Which of the givenn processes will cause a decrease in entropy? Note only one is correct. - dissolving NaCl in water? - removing a partition to mix two gases? - freezing water to make ice? - boiling water to make steam? - heating ice to make water?
why is oxygen 0 for enthalpy and not entropy? Explain Why for both please. Thank you!
(a) In a chemical reaction an explosion occurs. Would you expect AS to be positive, negative, or close to zero for this reaction? AS for this reaction should ---Select--- --Select--- be positive be negative be close to zero (b) In which of the processes described below should the entropy increase? Choose all of the correct possibilities. O ice cubes melting at -5 °C and 1 atm pressure formation of ice cubes in an ice-cube tray in a freezer O the reaction of nitrogen atoms to form N₂ molecules at 25 °C and 1 atm O dissolution of sugar in a hot cup of coffee formation solid rust (iron(III) oxide) by oxygen in the air reacting with the iron in an old boat X
please answer in text form and in proper format answer with must explanation , calculation for each part and steps clearly