Question 1 how would you distinguish between the following pair of compounds using ir spectroscopy? choose the correct answer. key features for the amide ir would be a c=o stretch at ~1700 cm-1. key features for the amine would be a n-h stretch at ~3400 cm-1. key features for the amide ir would be a c=o stretch at ~1700 cm-1 and a n-h stretch at ~3400 cm-1. key features for the amine would be a n-h stretch at ~3400 cm-1. key features for the amide ir would be a c=o stretch at ~1700 cm-1. key features for the amine would be two n-h stretches at ~3400 cm-1. key features for the amide ir would be a c=o stretch at ~3400 cm-1. key features for the amine would be a n-h stretch at ~1700 cm-1.