JEE Mains · Chemistry · STD 12 - 3. Chemical kinetics
Consider the given plot of enthalpy of the following reaction between \(A\) and \(B\).
\(A + B \to C + D\) Identify the incorrect statement
- A \(C\) is the thermodynamically stable product
- B Formation of \(A\) and \(B\) from \(C\) has highest enthalpy of activation
- C \(D\) is kinetically stable product
- D Activation enthalpy to form \(C\) is \(5\,kJ\, mol^{-1}\) less than that to form \(D\)
Answer & Solution
Correct Answer
(D) Activation enthalpy to form \(C\) is \(5\,kJ\, mol^{-1}\) less than that to form \(D\)
Step-by-step Solution
Detailed explanation
\({E_a} = (D \to C)\) \( = 15 - 0 = 15\,kJ\,mo{l^{ - 1}}\) \({E_a} = (A + B) \to C = 15\,kJ\,mo{l^{ - 1}}\) \({E_a} = (A + B) \to D = 10\,kJ\,mo{l^{ - 1}}\) \({E_a} = C \to (A + B) = 20\,kJ\,mo{l^{ - 1}}\) (high activation enthalpy in the reaction) \(\therefore \) Activation…
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 chemical reaction \(A \rightarrow B\), it was found that concentration of \(B\) is increased by \(0.2\, mol\,L^{-1}\) in \(30\, \mathrm{~min}\). The average rate of the reaction is \(......\times 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~h}^{-1}\). (Nearest integer)JEE Mains 2021 Medium
- During the borax bead test with \(CuSO _4\), a blue green colour of the bead was observed in oxidising flame due to the formation ofJEE Mains 2023 Hard
- If the solubility product of \(AB _{2}\) is \(3.20 \times 10^{-11}\, M ^{3}\), then the solubility of \(AB _{2}\) in pure water is......... \(\times 10^{-4}\) \(mol\) \(L ^{-1}\). [Assuming that neither kind of ion reacts with water]JEE Mains 2020 Medium
- If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be \(0.3\), then the observed freezing point will be \(.....\%\) higher than the expected/theoretical freezing point. (Nearest integer)JEE Mains 2023 Medium
- Among \(Co ^{3+}, Ti ^{2+}, V ^{2+}\) and \(Cr ^{2+}\) ions, one if used as a reagent cannot liberate \(H _{2}\) from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is \(......B.M\). (Nearest integer)JEE Mains 2022 Medium
- Which of the following complexes will exhibit maximum attraction to an applied magnetic field?JEE Mains 2023 Medium
More PYQs from JEE Mains
- Let \(\mathrm{C}\) be the circle of minimum area touching the parabola \(y=6-x^2\) and the lines \(y=\sqrt{3}|x|\). Then, which one of the following points lies on the circle \(C\)?JEE Mains 2024 Hard
- The number of real roots of the equation \(\mathrm{e}^{4 \mathrm{x}}-\mathrm{e}^{3 \mathrm{x}}-4 \mathrm{e}^{2 \mathrm{x}}-\mathrm{e}^{\mathrm{x}}+1=0\) is equal to \(.....\)JEE Mains 2021 Medium
- Two travelling waves produces a standing wave represented by equation, \({y}=1.0\, {mm} \cos \left(1.57 \,{cm}^{-1}\right) {x} \sin \left(78.5\, {s}^{-1}\right) {t}\) The node closest to the origin in the region \({x}>0\) will be at \({x}=\ldots \ldots \ldots\, {cm}\)JEE Mains 2021 Medium
- A closely wounded circular coil of radius \(5\,cm\) produces a magnetic field of \(37.68 \times 10^{-4}\,T\) at its center. The current through the coil is \(......A\). [Given, number of turns in the coil is \(100\) and \(\pi=3.14]\)JEE Mains 2022 Easy
- Let ABC be a triangle. Consider four points \(p _1, p _2\), \(p _3, p _4\) on the side AB , five points \(p _5, p _6, p _7, p _8, p _9\) on the side BC and four points \(p _{10}, p _{11}, p _{12}, p _{13}\) on the side AC . None of these points is a vertex of the triangle ABC . Then the total number of pentagons, that can be formed by taking all the vertices from the points \(p _1, p _2, \ldots . p _{13}\), is ___ .JEE Mains 2026 Medium
- For an ideal solution of two components \(A\) and \(B\), which of the following is true?JEE Mains 2014 Medium