Q20 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: IR · Marks: 2 · Difficulty: Medium
The frequency of O-H stretch occurs at $3600\ \mathrm{cm^{-1}}$. The O-D stretch frequency (in $\mathrm{cm^{-1}}$) would be closest to
(a)3000
(b)2600
(c)1800
(d)900
Answer
Answer (as printed): B
Explanation
vO-H = 3600 cm-1 Since, v = (1/ (2πc)) ´ sqrt (k/µ) This implies, frequency is inversely proportional to square root of µ. = 2600 cm-1
Explanation as extracted from the printed page; notation may be imperfect.
Study loop for Organic Spectroscopy