AP EAMCET · Chemistry · Thermodynamics (C)
Given that \(\Delta H_f(\mathrm{H})=218 \mathrm{~kJ} / \mathrm{mol}\), express the \(\mathrm{H}-\mathrm{H}\) bond energy in \(\mathrm{kcal} / \mathrm{mol}\).
- A 52.15
- B 911
- C 104
- D 52153
Answer & Solution
Correct Answer
(C) 104
Step-by-step Solution
Detailed explanation
Given : \(\Delta H_f(\mathrm{H})=218 \mathrm{~kJ} / \mathrm{mol}\) ie, \(\quad \frac{1}{2} \mathrm{H}_2 \longrightarrow \mathrm{H} ; \quad \Delta H=218 \mathrm{~kJ} / \mathrm{mol}\)…
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 number of hydrogen molecules possible from its isotopes isAP EAMCET 2022 Easy
- Choose the correct option regarding: Assertion Energy of the orbital decreases with increase of ' \(n\) '.
Reason Energy is required in shifting away the negatively charged electron from positively charged nucleusAP EAMCET 2020 Easy - At \(300 \mathrm{~K}, \Delta_{\mathrm{r}} \mathrm{G}^{\circ}\) for the reaction \(\mathrm{A}_2(\mathrm{~g}) \rightleftharpoons \mathrm{B}_2(\mathrm{~g})\) is -11.5 kJ \(\mathrm{mol}^{-1}\). The equilibrium constant at 300 K is approximately \(\left(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)\)AP EAMCET 2024 Medium
- In which of the following metals extraction, impurities are removed as slag?
i. Al \(\quad\) ii. Fe
iii. Cu \(\quad\) iv. Zn
The correct option isAP EAMCET 2024 Easy - \(0.8 \mathrm{~mL}\) of acetic acid of density \(1.06 \mathrm{~g} \mathrm{~mL}^{-1}\) when dissolved in \(1 \mathrm{~kg}\) of water causes a depression in freezing point by \(0.0325^{\circ} \mathrm{C}\). The Van't Hoff factor is:
\(\left(\mathrm{K}_{\mathrm{f}} \text { of } \mathrm{H}_2 \mathrm{O}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\)AP EAMCET 2017 Medium - An organic compound of molecular formula has six carbon atoms in a ring system, two non-conjugate double bonds and two bromo groups at positions. Then the compound isAP EAMCET 2021 Easy
More PYQs from AP EAMCET
- A proton moving with a velocity \(2.5 \times 10^7 \mathrm{~m} / \mathrm{s}\), enters a magnetic field of intensity \(2.5 \mathrm{~T}\) making an angle \(30^{\circ}\) with the magnetic field. The force on the proton isAP EAMCET 2020 Medium
- The displacement is given by \(x=2 t^2+t+5\), the acceleration at \(t=2 \mathrm{~s}\) isAP EAMCET 2020 Medium
- Order of acidity of benzoic acid (I), 4-methoxybenzoic acid (II), acetic acid (III) and 4-nitrobenzoic acid (IV) isAP EAMCET 2018 Medium
- Identify the product of the following reaction.
AP EAMCET 2021 Medium - For the redox reaction , the correct coefficients of the reactants for the balanced reaction are respectively and :AP EAMCET 2021 Easy
- If five logic gates are connected as shown in the figure, then the values of \(\mathrm{y}_1, \mathrm{y}_2\) and \(y_3\) are respectively
AP EAMCET 2025 Medium