When comparing the ir spectra of the two compounds below, what absorption(s) would allow you to distinguish the compounds? hc≡cch2n(ch2ch3)2andch3(ch2)5c≡n strong, broad peak at 3600−3200 cm−1 medium peak at 3500−3200 cm−1 medium peak at 3300 cm−1 medium peak at 3150−3000 cm−1 strong peak at 3000−2850 cm−1 medium peak at 2250 cm−1 strong peak at ~1700 cm−1 medium peak at at 1650 cm−1 medium peak at 1600, 1500 cm−1 no distinguishing peaks

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.