Q73 · CSIR-NET Chemistry, December 2016

Paper: CSIR-NET December 2016 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: NMR 1H · Marks: 2 · Difficulty: Hard

${ }^{\mathrm{1}} \mathrm{H ~ NMR}$ spectrum of a mixture of benzene and acetonitrile shows two singlets of equal integration. The molar ratio of benzene: acetonitrile is

(a)1:1

(b)2:1

(c)1:2

(d)6:1

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

Benzene 6 H, acetonitrile 3 H; equal integrals require twice as many acetonitrile molecules — benzene : MeCN = 1 : 2.

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