Chapter 15 – Thermodynamics

A sample of 100 g water is slowly heated from 27 C to 87 C. Calculate the change in the entropy of the water specific heat capacity of water = 4200(J)/(kg-K) A sample of 100 g water is slowly heated from 27 C to 87 C. Calculate the change in the entropy of the water [...]

A freezer has coefficient of performance 5 %. When 3.6×10^6 J work is done on the freezer, what mass of water at 0 C is converted to ice cubes at 0 C? A freezer has coefficient of performance 5 %. When 3.6×10^6 J work is done on the freezer what mass of water at 0 [...]

An ideal monoatomic gas goes through a cyclic process consisting two isochoric and two isobaric lines. The absolute temperature of the gas rise two times both in isochoric heating and isobaric expansion. If number of moles are three, find efficiency of cyclic process. Heat is supplied to a diatomic gas at constant pressure. The ratio [...]

A Carnot engine having a perfect gas gas the working substance is driven backwards and is used for freezing water already at 0 C. If the engine is driven by 500 W electric motor with an efficiency of 60% how long will it take to freeze 15 kg of water? The working temps of the [...]

Two Carnot engines A and B are operated in series. The first one A receives heat at 900K and rejects it to a reservoir at T K. The second engine B receives the heat rejected by the first engine and rejects it to a heat reservoir at 400K. Calculate the value of T, when the [...]

A perfect Carnot engine utilizes an ideal gas the source temperature is 500 K and sink temperature is 375 K. If the engine takes 600 kcal per cycle from the source, calculate A perfect Carnot engine utilizes an ideal gas the source temperature is 500 K and sink temperature is 375 K. If the engine [...]

P-V curve of a diatomic gas is shown In the figure. Find the total heat given to the gas in the process A ⟶ B ⟶C. P-V curve of a diatomic gas is shown In the figure. Find the total heat given to the gas in the process A ⟶ B ⟶C. September 12, 2021 [...]

P-T curve of a cyclic process is shown. If number of moles of the gas are n. The work done by the gas in the given process is P-T curve of a cyclic process is shown. If number of moles of the gas are n. The work done by the gas in the given process [...]

T-V curve of cyclic process is shown below, number of moles of the gas are n, find the total work done during the cycle. find the total work done during the cycle. number of moles of the gas are n T-V curve of cyclic process is shown below September 12, 2021 Category: Chapter 15 - [...]

The cylinder shown in the figure has conducting walls and temperature of the surrounding is T, the piston is initially in equilibrium, the cylinder contains n moles of a gas. Now the piston is displaced slowly by an external agent to make the volume double of its initial value. The work done by external agent [...]