JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
If enthalpy of atomisation for \(\mathrm{Br}_{2(l)}\) is \(\mathrm{x}\; \mathrm{kJ} / \mathrm{mol}\) and bond enthalpy for \(\mathrm{Br}_{2}\) is \(y \;\mathrm{kJ} / \mathrm{mol}\), the relation between them
- A is \(x = y\)
- B is \(x < y\)
- C does not exist
- D is \(x > y\)
Answer & Solution
Correct Answer
(D) is \(x > y\)
Step-by-step Solution
Detailed explanation
Enthalpy of atomisation of \(\mathrm{Br}_{2}(l)\) \(\mathrm{Br}_{2}(l) \stackrel{\Delta \mathrm{H}_{\mathrm{vap}}}{\longrightarrow} \mathrm{Br}_{2}(\mathrm{g}) \stackrel{\Delta \mathrm{H}_{\mathrm{BE}}}{\longrightarrow} 2 \mathrm{Br}(\underline{\mathrm{g}})\)…
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
- What are the functional groups present in the structure of maltose \(?\)JEE Mains 2020 Hard
- \(40^{\circ}\) of \(HI\) undergoes decomposition to \(H _{2}\) and \(I _{2}\) at \(300\, K . \Delta G ^{\ominus}\) for this decompostion reaction at one atmosphere pressure is \(...\,J\, mol ^{-1} \cdot\) [nearest integer] (Use \(R =8.31\, J\, K ^{-1}\, mol ^{-1} ; \log 2=0.3010\). In \(10=\) \(2.3, \log 3=0.477\) )JEE Mains 2022 Medium
- Total number of optically active compounds from the following is _______.
JEE Mains 2024 Medium - \(4.0\, L\) of an ideal gas is allowed to expand isothermally into vacuum until the total volume is \(20\, L.\) The amount of heat absorbed in this expansion is \(.....\,L\,atm\)JEE Mains 2022 Medium
- Which of the following ions is the strongest oxidizing agent? (Atomic Number of \(\mathrm{Ce}=58, \mathrm{Eu}=63, \mathrm{~Tb}=65, \mathrm{Lu}=71\) )JEE Mains 2025 Medium
- Given below are two statements :
Statement I : Ozonolysis followed by treatment with \(\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}\) of cis-2-butene gives ethanal.Statement II : The production obtained by ozonolysis followed by treatment with \(\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}\) of 3, 6-dimethyloct-4-ene has no chiral carbon atom.
In the light of the above statements, choose the correct answer from the options given belowJEE Mains 2025 Hard
More PYQs from JEE Mains
- If \(\rho\) is the density and \(\eta\) is coefficient of viscosity of fluid which flows with a speed \(v\) in the pipe of diameter \(d\), the correct formula for Reynolds number \(R _{ e }\) is ..............JEE Mains 2022 Easy
- A thin prism of angle \(6^{\circ}\) and refractive index for yellow light \(\left(n_{Y}\right) 1.5\) is combined with another prism of angle \(5^{\circ}\) and \(n _{ Y }=1.55\). The combination produces no dispersion. The net average deviation ( \(\delta\) ) produced by the combination is \(\left(\frac{1}{x}\right)^{\circ}\). The value of \(x\) is.......
JEE Mains 2022 Medium - Which of the following compounds is not colored yellow ?JEE Mains 2015 Hard
- Match List-I with List-II.
List-I (Purification technique) List-II (Mixture of organic compounds) (A) Distillation (simple) (I) Diesel + Petrol (B) Fractional distillation (II) Aniline + Water (C) Distillation under reduced pressure (III) Chloroform + Aniline (D) Steam distillation (IV) Glycerol + Spent-lye
Choose the correct answer from the options given below :JEE Mains 2025 Medium - Let \(f: \mathbb{R} \rightarrow \mathbb{R}\) be a function defined by
\(f(x)=(2+3 a) x^2+\left(\frac{a+2}{a-1}\right) x+b, a \neq 1 . \text { If }\)
\(f(x+\mathrm{y})=f(x)+f(\mathrm{y})+1-\frac{2}{7} x \mathrm{y}\), then the value of \(28 \sum_{i=1}^5|f(i)|\) isJEE Mains 2025 Medium - The products formed in the following reaction sequence are _______.
JEE Mains 2025 Medium