Question Bank › Physical Chemistry › Physical Spectroscopy › ABC26PH0506the infrared spectrum of HCl gas shows an absorption band centered at 2885 cm⁻¹. The zero point energy of HCl… · ABC26PH0506 Subject: Physical Chemistry · Chapter: Physical Spectroscopy · Topic: Physical Spectroscopy – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium
the infrared spectrum of HCl gas shows an absorption band centered at $2885 \mathrm{cm}^{-1}$. The zero point energy of HCl molecule under hamonic oscillator approximation is:
(a) $2.866 \times 10^{-22} \mathrm{J}$
(b) $2.8665 \times 10^{-20} \mathrm{J}$
(c) $5.7330 \times 10^{-22} \mathrm{J}$
(d) $5.7330 \times 10^{-20} \mathrm{J}$
Answer Answer: B ✓ checked by 4AB · confidence high
Explanation ZPE = ½hcν̃ = 0.5 × 6.626×10⁻³⁴ × 3×10¹⁰ × 2885 ≈ 2.87×10⁻²⁰ J (b).
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