AP EAMCET · Chemistry · Thermodynamics (C)
If \(5 \mathrm{~L}\) of an ideal gas at a constant external pressure of \(2 \mathrm{~atm}\) expands isothermally to a final volume of ' \(\mathrm{X}\) ' \(\mathrm{L}\), the system does a work of \(-2,026.4 \mathrm{~J}\). ' \(\mathrm{X}\) ' (in L) is (1 L. atm \(=101.32 \mathrm{~J}\) )
- A 25
- B 20
- C 15
- D 10
Answer & Solution
Correct Answer
(C) 15
Step-by-step Solution
Detailed explanation
\(\mathrm{W}=-\mathrm{P}_{\mathrm{ext}}\left(\mathrm{V}_2-\mathrm{V}_1\right)=-2(\mathrm{x}-5)=-2026.4 \mathrm{~J}\) \(\begin{aligned} & =-20 \text { L.atm } \\ & \Rightarrow-2 x+10=-20 \Rightarrow 2 x-10=20 \\ & \Rightarrow x=15 L\end{aligned}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- For a reaction, the graph of \(\ln \mathrm{k}\) (on y -axis) and \(1 / \mathrm{T}\) (on x -axis) is a straight line with a slope \(-2 \times 10^4 \mathrm{~K}\). The activation energy of the reaction (in \(\mathrm{kJ} \mathrm{mol}^{-1}\) ) is \(\left(\mathrm{R}=8.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)\)AP EAMCET 2025 Medium
- For a first order reaction , the concentrations vs time plot is as shown. The half-life of the reaction is
AP EAMCET 2020 Easy - \(31 \mathrm{~g}\) of ethylene glycol \(\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)\) is dissolved in \(600 \mathrm{~g}\) of water. The freezing point depression of the solution is \(\left(K_f\right.\) for water is \(\left.1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\)AP EAMCET 2017 Medium
- of solution is mixed with of acetic acid solution, the of the resulting solution is_________
of acetic acid is .AP EAMCET 2019 Medium - If the bond length and dipole moment of a diatomic molecule are \(1.25 \mathrm{~A}\) and \(1.0 \mathrm{D}\) respectively, what is the per cent ionic character of the bond?AP EAMCET 2003 Easy
- The group present in prontosil isAP EAMCET 2023 Medium
More PYQs from AP EAMCET
- Let . If is such that and , then is equal to:AP EAMCET 2022 Hard
- Two charged particles each of mass \(9.8 \mathrm{~g}\) and charges \(+20 \mu \mathrm{C}\) and \(-20 \mu \mathrm{C}\) are attached to the two ends of a massless and rigid uniform non-conducting rod of length \(50 \mathrm{~cm}\). This arrangement is held in a uniform electric field of \(12.1 \mathrm{NC}^{-1}\), such that the rod makes a very small angle with the field direction. If the rod is set free, the minimum time needed for the rod to become parallel to the direction of the electric field is ................ seconds.AP EAMCET 2018 Hard
- If \(\bar{p}, \bar{q}, \bar{r}\) are three mutually perpendicular vectors of equal magnitude and if a vector \(\bar{x}\) satisfies the equation \(\bar{p} \times((\bar{x}-\bar{q}) \times \bar{p})+\bar{q} \times((\bar{x}-\bar{r}) \times \bar{q})+\bar{r} \times((\bar{x}-\bar{p}) \times \bar{r})=\bar{o}\) then \(\bar{x}\) isAP EAMCET 2017 Medium
- A body is projected vertically upwards with a velocity of \(20 \mathrm{~m} \mathrm{~s}^{-1}\). If the potential energy of the body at a height of 5 m from the ground is 100 J, then the kinetic energy of the body at a height of 10 m from the ground is
(Acceleration due to gravity \(=10 \mathrm{~m} \mathrm{~s}^{-2}\) )AP EAMCET 2025 Medium - A beaker containing a mixture of liquid \(A\) and liquid \(B\), in equilibrium with each other, is cooled very slowly. If point ' \(D\) ' on the graph is where solidification of both liquids is complete, how many different phases co-exist along line ' \(C D\) ' if freezing point of liquid \(B\) and liquid \(A\) are \(-25^{\circ} \mathrm{C}\) and \(-78^{\circ} \mathrm{C}\) respectively.
AP EAMCET 2020 Hard - Identify the point on the line 2x + 3y + 7 = 0, which is at a distance of + 3 units from (1, − 3).AP EAMCET 2021 Medium