An ideal gas expands isothermally from volume | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) $1$. In the $p-V$ diagram,the isothermal expansion from $A$ to $B$ follows the curve $AB$. The adiabatic compression from $B$ to $C$ follows the c

Vedclass · Accepted Answer

$p_2 > p_1, W < 0$

Vedclass · Answer

(D) $1$. In the $p-V$ diagram,the isothermal expansion from $A$ to $B$ follows the curve $AB$. The adiabatic compression from $B$ to $C$ follows the curve $BC$.$2$. From the graph,it is clear that the final pressure $p_2$ at point $C$ is greater than the initial pressure $p_1$ at point $A$ $(p_2 > p_1)$.$3$. The net work done $W$ by the gas in a cyclic process is equal to the area enclosed by the cycle $ABCA$. Since the process is counter-clockwise (expansion $A 	o B$ followed by compression $B 	o C$),the work done by the gas is negative $(W $4$. Alternatively,the area under the adiabatic curve $BC$ (which is the work done on the gas during compression) is greater than the area under the isothermal curve $AB$ (which is the work done by the gas during expansion). Thus,the net work done by the gas is negative.$5$. Therefore,$p_2 > p_1$ and $W < 0$.

An ideal gas expands isothermally from volume $V_1$ to volume $V_2$. It is then compressed to the original volume $V_1$ adiabatically. If $p_1$ and $p_2$ represent the initial pressure and final pressure respectively,and $W$ represents the net work done by the gas during the entire process,then:

Similar Questions

The cubic unit cell of a metal (molar mass $= 63.55 \ g \ mol^{-1}$) has an edge length of $362 \ pm$. Its density is $8.92 \ g \ cm^{-3}$. The type of unit cell is

During the change of $O_2$ to $O_2^-$ ion,the electron adds to which one of the following orbitals?

The half-life of a radioactive element is $10 \ h$. The fraction of initial radioactivity of the element that will remain after $40 \ h$ is

Which of the following reagents will convert glycerol into acrolein?

In which of the following reactions will the yield of the product increase with an increase in pressure?

Vedclass Test Series

Exam Paper Generator

Online Exam Module