UPSC Civil Services (Mains), Chemistry optional · 2024 · Paper II
Q8(c)(iii). Bond length of HCl from its moment of inertia
Question
Using the following data, calculate the bond length of HCl: I = 2.70 × 10⁻⁴⁷ kg m²; 1 amu = 1.661 × 10⁻²⁷ kg.
Answer in brief
r = 1.29 × 10⁻¹⁰ m = 1.29 Å (129 pm).
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Coversmoment of inertiabond lengthrigid rotorreduced massrotational spectroscopyHCl
All parts of Question 8
- 8(a) Assignment of four C=O stretching bands15 marks
- 8(b)(i) Ring opening of 2,2-dimethylcyclopropanone by methoxide10 marks
- 8(b)(ii) Order of J(Ha–Hb)5 marks
- 8(c)(i) Two alkenes from 2-chloro-2,3-dimethylbutane10 marks
- 8(c)(ii) Fragmentation of diethyl ether5 marks
- 8(c)(iii) Bond length of HCl from its moment of inertia5 marks