chemistry help
1) Consider the reversible Carnot cycle shown in Figure 5.2 with 1 mol of an ideal gas with CV = 3/2R as the working substance. The initial isothermal expansion occurs at the hot reservoir temperature of Thot = 600ºC from an initial volume of 3.50 L (Va) to a volume of 10.0 L (Vb). The system then undergoes an adiabatic expansion until the temperature falls to Tcold = 150ºC. The system then undergoes an isothermal compression and a subsequent adiabatic compression until the initial state described by Ta = 600ºC and Va = 3.50 L is reached.
a) Calculate Vc and Vd. b) Calculate w for each step in the cycle and for the total cycle. c) Calculate ε and the amount of heat that is extracted from the hot reservoir to do 1.00 kJ of work in the surroundings.
2) One mole of an ideal gas with CV = 3/2R undergoes the transformations described in the following list from an initial state described by T = 300 K and P = 1.00 bar. Calculate q, w, ΔU, ΔH, and ΔS for each process. a. The gas is heated to 450 K at a constant external pressure of 1.00 bar. b. The gas is heated to 450 K at a constant volume corresponding to the initial volume. c. The gas undergoes a reversible isothermal expansion at 300 K until the pressure is half of its initial value.
3) One mole of an ideal gas with CV,m = 5/2R undergoes the transformations described in the following list from an initial state described by T = 250 K and P = 1.00 bar. Calculate q, w, ΔU, ΔH, and ΔS for each process.
a. The gas undergoes a reversible adiabatic expansion until the final pressure is half its initial value.
b. The gas undergoes an adiabatic expansion against a constant external pressure of 0.500 bar until the final pressure is half its initial value.
c. The gas undergoes an expansion against a constant external pressure of zero bar until the final pressure is equal to half of its initial value.The post chemistry help first appeared on cipdpro.co.uk .chemistry help was first posted on January 24, 2024 at 2:22 am.©2019 "cipdpro.co.uk ". Use of this feed is for personal non-commercial use only. If you are not reading this article in your feed reader, then the site is guilty of copyright infringement. Please contact me at admin@cipdpro.co.uk
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