Competishun Header
Competishun
Contact Us
Back

Report Issue

JEE MAIN_2026
05-04-26_S1
Question
The values of pressure equilibrium constant recorded at different temperatures for the following equilibrium reaction have been given below $\mathrm{A}(\mathrm{g}) \mathrm{f} \quad \mathrm{B}(\mathrm{g})+\mathrm{C}(\mathrm{g})$ The magnitude of $\frac{\Delta H^{\circ}}{R}$ calculated from the above data is $\_\_\_\_$ . (Nearest integer)
Write Your Answer
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Using formula $$ \begin{aligned} & \log \mathrm{K}_{\mathrm{P}_2}-\log \mathrm{K}_{\mathrm{P}_1}=\frac{\Delta \mathrm{H}}{2.303 \mathrm{R}}\left(\frac{1}{\mathrm{~T}_1}-\frac{1}{\mathrm{~T}_2}\right) \\ & 3.5-2.5=\frac{\Delta \mathrm{H}}{2.303 \mathrm{R}}(0.06-0.05) \\ & \frac{\Delta \mathrm{H}}{\mathrm{R}}=\frac{2.303}{0.01} \\ & \frac{\Delta \mathrm{H}}{\mathrm{R}}=230.3 \approx 230 \end{aligned} $$
Question Tags
JEE Main
Chemistry
Medium
Start Preparing for JEE with Competishun
YouTube
Books
App
Tests
Filters 0
JEE Main
JEE Advance
Easy
Medium
Hard
Showing 18 questions
QJEE MAIN_2026
Complete the following reaction sequence and give the name of major product ‘P’
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
Identify the correct IUPAC name of hydrocarbon $(x)$ containing three primary carbon atoms and with molar mass $72 \mathrm{~g} \mathrm{~mol}^{-1}$.
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
IUPAC name of the some alkenes are given below. Find out the correct stability order. A. 2-Methylbut-2-ene B. cis-But-2-ene C....
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
Match List - I with List - II Choose the correct answer from the options given below :
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
Identify the correct statements from the following A. $\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$ is the most stable complex among $\left[\mathrm{Fe}(\mathrm{OH})_6\right]^{3-},\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$ and $\left[\mathrm{Fe}(\mathrm{SCN})_6\right]^{3-}$...
JEE MainChemistryHard
View Solution→
QJEE MAIN_2026
Given below are two statements : Statement I: Presence of large number of unpaired electrons in transition metal atoms results...
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
Given below are two statements : Statement I: Aluminium upon reaction with NaOH forms $\left[\mathrm{Al}(\mathrm{OH})_6\right]^{3-}$ ion. Statement II : The...
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
Given below are two statements : Statement 1 : The number of pairs among $...
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
One half cell in a voltaic cell is constructed by dipping silver rod in $\mathrm{AgNO}_3$ solution of unknown concentration, other...
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
The reaction $\mathrm{A}(\mathrm{g}) \mathrm{f} \quad \mathrm{B}(\mathrm{g})+\mathrm{C}(\mathrm{g})$ was initiated with the amount ' a ' of $\mathrm{A}(\mathrm{g})$. At equilibrium it is...
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
The correct order of molar heat capacities measured at 298 K and 1 bar is :
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
Consider the following data for the reaction $$ X_2(g)+Y_2(g) f \quad 2 X Y(g) $$ at 600 K . The...
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
The covalent radii of atoms $A$ and $B$ are $r_A$ and $r_B$, respectively. The covalent bond length and total length...
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
Which of the following statement(s) is/are true ? A. If two orbitals have the same value of $(\mathrm{n}+l)$, the orbital...
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
What volume of hydrogen gas at STP would be liberated by action of 50 mL of $\mathrm{H}_2 \mathrm{SO}_4$ of $...
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
If the half life of a first order reaction is 6.93 minutes then the time required for completion of $...
JEE MainChemistryEasy
View Solution→
QJEE MAIN_2026
The values of pressure equilibrium constant recorded at different temperatures for the following equilibrium reaction have been given below $...
JEE MainChemistryMedium
View Solution→
QJEE MAIN_2026
One mole of phenol is treated with dilute $\mathrm{HNO}_3$ at 298 K to give a mixture of products. The mixture...
JEE MainChemistryMedium
View Solution→