JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
For independent process at \(300\,K\).
| Process | \(\Delta H / kJ\,mol ^{-1}\) | \(\Delta S / J K^{-1}\) |
| \(A\) | \(-25\) | \(-80\) |
| \(B\) | \(-22\) | \(40\) |
| \(C\) | \(25\) | \(-50\) |
| \(D\) | \(22\) | \(20\) |
- A \(4\)
- B \(6\)
- C \(2\)
- D \(8\)
Answer & Solution
Correct Answer
(C) \(2\)
Step-by-step Solution
Detailed explanation
\(\Delta G =\Delta H - T \Delta S\) \(A : \Delta G \left( J\,mol ^{-1}\right)=-25 \times 10^3+80 \times 300:- ve\) \(B : \Delta G \left( J\,mol ^{-1}\right)=-22 \times 10^3-40 \times 300:- ve\) \(C : \Delta G \left( J\,mol ^{-1}\right)=25 \times 10^3+300 \times 50:+ ve\)…
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 certain reaction consider the plot of \(lnk\) versus \(1/T\) given in the figure. If the rate constant of this reaction at \(400\,K\) is \(10^{-5}\,s^{-1},\) then the rate constant at \(500\,K\) is
JEE Mains 2019 Hard - Which of the following molecules(s) show/s paramagnetic behavior?
(A) \(\mathrm{O}_2\)
(B) \(\mathrm{N}_2\)
(C) \(\mathrm{F}_2\)
(D) \(\mathrm{S}_2\)
(E) \(\mathrm{Cl}_2\)
Choose the correct answer from the options given below :JEE Mains 2025 Medium - Which one of the following class of compounds is obtained by polymerization of acetylene?JEE Mains 2014 Hard
- Consider the following species:
BrF\(_5\), XeF\(_5^-\), BF\(_4^-\), ICl\(_4^-\), XeF\(_4\), SF\(_4\), NH\(_4^+\), ClF\(_3\), XeF\(_2\), ICl\(_2^-\)
Number of species having sp\(^3\)d hybridized central atom is __________.JEE Mains 2026 Medium - \(Fex _{2}\) and \(Fey _{3}\) are known when \(x\) and \(y\) are :JEE Mains 2021 Easy
- In sulphur estimation, \(2.0 \times 10^{-3}\) mol of an organic compound (X) (molar mass \(76\) g mol\(^{-1}\)) gave \(0.4813\) g of barium sulphate (molar mass \(233\) g mol\(^{-1}\)). The percentage of sulphur in the compound (X) is ______ \(\times 10^{-1}\) % (Nearest integer)JEE Mains 2026 Medium
More PYQs from JEE Mains
- Let \(P \left( x _0, y _0\right)\) be the point on the hyperbola \(3 x ^2-4 y ^2\) \(=36\), which is nearest to the line \(3 x+2 y=1\). Then \(\sqrt{2}\left( y _0- x _0\right)\) is equal to :JEE Mains 2023 Hard
- For \(\mathrm{A}_2+\mathrm{B}_2 \rightleftharpoons 2 \mathrm{AB}\)
\(\mathrm{E}_{\mathrm{a}}\) for forward and backward reaction are 180 and \(200 \mathrm{~kJ} \mathrm{~mol}^{-1}\) respectively
If catalyst lowers \(\mathrm{E}_{\mathrm{a}}\) for both reaction by \(100 \mathrm{~kJ} \mathrm{~mol}^{-1}\).
Which of the following statement is correct?JEE Mains 2025 Medium - The points of intersection of the line \(a x+b y=0\), \(( a \neq b )\) and the circle \(x ^2+ y ^2-2 x =0\) are \(A (\alpha, 0)\) and \(B (1, \beta)\). The image of the circle with \(AB\) as a diameter in the line \(x + y +2=0\) is:JEE Mains 2023 Hard
- The figure shows a liquid of given density flowing steadily in horizontal tube of varying cross-section. Cross sectional areas at \(A\) is \(1.5\,cm ^2\), and \(B\) is \(25\,mm ^2\), if the speed of liquid at \(B\) is \(60\,cm / s\) then \(\left( P _{ A }- P _{ B }\right)\) is :(Given \(P _{ A }\) and \(P _{ B }\) are liquid pressures at \(A\) and \(B\) points.Density \(\rho=1000\,kg\,m ^{-3}\) \(A\) and \(B\) are on the axis of tube \(............\,Pa\)
JEE Mains 2023 Hard - The least acidic compund, among the following is which?
JEE Mains 2025 Hard - An ideal fluid flows (laminar flow) through a pipe of non-uniform diameter. The maximum and minimum diameters of the pipes are \(6.4 \;\mathrm{cm}\) and \(4.8 \;\mathrm{cm},\) respectively. The ratio of the minimum and the maximum velocities of fluid in this pipe is:JEE Mains 2020 Medium