Question

2. Two bottles of colourless liquids have been in the back of the storeroom. Due to the age of the bottles the labels have fallen off. But it's known that one is formic acid and the other is 1-propanol. (a) If you were to measure the IR of these liquids, what differences could you use to identify the compounds? (1 mark) (b) Give a nonspectroscopic way that might be used to identify these two compounds. (0.5 mark) 3. Name three compound types of organic compounds that have the CEO functional group but not the hydroxyl group. (0.5 mark)

Answer 1

* Given: foomic acid and i-propance @ we can differentiate above compounds by using speachy IR- Spechoscopy. Because both are having aliquerent functional gouces. • Fuomic acid – H- OH → acid gooep is the functional qrup l-propanol – CH=CH-CH-OH - alcohol is the functional gouces in case of fomic acid, we can observe & Peak at ~ 1760 cm where as this peaks os absent ºn i-propanol. © By using chemical test, we can differentiate poomic acld and 1-propanol. de schen juomic acid is freated with Nately, sodium joomate is formed with the effervesence of co. ve HCOOH + Nancy -> HCOONa + (0,7+ HD where as forpanel dues not react with Nattel, in 1-propanol + Nattens - No seaction. crogante compounds contains a functional gouup aldehyde – R-CHO = R-C-H. & ketones – R-CO-R' - R&R - ③ amides – R-{_NH₂ 6 Esters - R&-OR & anhydrides - Rå-od-r