JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
Let us consider a reversible reaction at temperature, T. In this reaction, both \(\Delta \mathrm{H}\) and \(\Delta \mathrm{S}\) were observed to have positive values. If the equilibrium temperature is Te , then the reaction becomes spontaneous at :
- A \(\mathrm{T}=\mathrm{Te}\)
- B \(\mathrm{Te} \gt \mathrm{T}\)
- C \(\mathrm{T} \gt \mathrm{Te}\)
- D \(\mathrm{Te}=5 \mathrm{~T}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{T} \gt \mathrm{Te}\)
Step-by-step Solution
Detailed explanation
For reaction to be spontaneous according to \(2^{\text {nd }}\) law:…
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
- The reaction of \(\mathrm{H}_{3} \mathrm{N}_{3} \mathrm{B}_{3} \mathrm{Cl}_{3}\) \((A)\) with \(\mathrm{LiBH}_{4}\) in tetrahydrofurane gives inorganic benzene \((B)\). Further, the reaction of \((A)\) with \((C)\) leads to \(\mathrm{H}_{3} \mathrm{N}_{3} \mathrm{B}_{3}(\mathrm{Me})_{3}\). than Compounds \((\mathrm{B})\) and \((\mathrm{C})\) respectively, areJEE Mains 2020 Hard
- \(1\, \mathrm{~kg}\) of \(0.75\) molal aqueous solution of sucrose can be cooled up to \(-4^{\circ} \mathrm{C}\) before freezing. The amount of ice (in \(g\)) that will be separated out is .... . (Nearest integer) \(\left[\right.\) Given \(\left.: \mathrm{K}_{\mathrm{f}}\left(\mathrm{H}_{2} \mathrm{O}\right)=1.86\, \mathrm{~K}\, \mathrm{~kg}\, \mathrm{~mol}^{-1}\right]\)JEE Mains 2021 Medium
- Of the following four aqueous solutions, total number of those solutions whose freezing point is lower than that of \(0.10\, \mathrm{M} \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\) is (Integer answer) \((i)\) \(0.10\, \mathrm{M} \,\mathrm{Ba}_{3}\left(\mathrm{PO}_{4}\right)_{2}\) \((ii)\) \(0.10\, \mathrm{M}\, \mathrm{Na}_{2} \mathrm{SO}_{4}\) \((iii)\) \(0.10\, \mathrm{M}\, \mathrm{KCl}\) \((iv)\) \(0.10 \,\mathrm{M} \,\mathrm{Li}_{3} \mathrm{PO}_{4}\)JEE Mains 2021 Medium
- For silve \({C_P}\,\left( {J{K^{ - 1}}\,mo{l^{ - 1}}} \right) = 23 + 0.01\,T\) . If the temperature \((T)\) of \(3\, moles\) of silver is raised from \(300\, K\) to \(1000\, K\) at \(1\, atm\) pressure, the value of \(\Delta H\) will be close to.....\(kJ\)JEE Mains 2019 Hard
- Match the LIST-I with LIST-II
List-I
Deficiency DiseaseList-II
VitaminA. Scurvy I. Pyridoxine B. Convulsions II. Vitamin A C. Cheilosis III. Ascorbic Acid D. Xerophthalmia IV. Riboflavin
Choose the correct answer from the options given below:JEE Mains 2026 Medium - Number of stereoisomers possible for the complexes, \(\left[\mathrm{CrCl}_3(\mathrm{py})_3\right]\) and \(\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}\) are respectively
( \(\mathrm{py}=\) pyridine, \(\mathrm{ox}=\) oxalate)JEE Mains 2025 Medium
More PYQs from JEE Mains
- Among \((a) - (d)\) the complexes that can display geometrical isomerism are \((a)\) \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}\right]^{+}\) \((b)\) \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right) \mathrm{Cl}_{5}\right]^{-}\) \((c)\) \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right]\) \((d)\) \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{ClBr}\right]^{2+}\)JEE Mains 2020 Hard
- Given below are two statements: Statements \(I:\) The temperature of a gas is \(-73^{\circ}\,C\). When the gas is heated to \(527^{\circ}\,C\), the root mean square speed of the molecules is doubled. Statement \(II:\) The product of pressure and volume of an ideal gas will be equal to translational kinetic energy of the molecules. In the light of the above statements, choose the correct answer from the options given below :JEE Mains 2023 Medium
- At a given instant, say \(t = 0,\) two radioactive substances \(A\) and \(B\) have equal activates. The ratio \(\frac{{{R_B}}}{{{R_A}}}\) of their activities. The ratio \(\frac{{{R_B}}}{{{R_A}}}\) of their activates after time \(t\) itself decays with time \(t\) as \(e^{-3t}.\) If the half-life of \(A\) is \(ln2,\) the half-life of \(B\) isJEE Mains 2019 Hard
- In the estimation of bromine, \(0.5\, g\) of an organic compound gave \(0.40\, g\) of silver bromide. The percentage of bromine in the given compound is \(.....\,\%\) (nearest integer) (Relative atomic masses of \(Ag\) and \(Br\) are \(108\, u\) and \(80\, u\), respectively).JEE Mains 2022 Medium
- An inductor coil stores \(64\, {J}\) of magnetic field energy and dissipates energy at the rate of \(640\, {W}\) when a current of \(8\, {A}\) is passed through it. If this coil is joined across an ideal battery, find the time constant of the circuit in secondsJEE Mains 2021 Hard
- The integral \(\int {\frac{{{{\sin }^2}\,x\,{{\cos }^2}\,x}}{{({{\sin }^3}\,x\, + {{\cos }^3}\,x)^2}}} dx\) is equal toJEE Mains 2014 Hard