Question

3

Evaporating Acetone 1. Place the clean measuring end of a digital thermometer into the provided container with acetone. Record the initial temperature in °C, then remove the thermometer, waving it a bit in the air to rapidly evaporate the acetone. The temperature quickly falls, record the final temperature. Explain! Initial temperature_22.0°C Final temperature -2.7° . 3. Now analyze the process from the point of view of thermodynamic properties (the endothermic At the positive AS , and the spontaneity of the process).

Answer 1

2A The demternture ils gpica on emporationf acubone Exaperahons acetone woleales a han ar close to casho' aneiad Sepante tha acutoe Meve foather part in acatone absorbs hent from f Suernaliuza. ane in tate leales as tu1 phoce Hence In the poce of emporhan tha hijhy enaeic acetone lecules have saffaent eayr molecubes have fo ech he in phose to ovecone aHachons t autone Gi stte an extas t tha the acetone moleadas ij deneases and Hha tamperature 7ae The aid acton Cantimutly abab engr f Si eep esnpohahion oinich esalt in a decnesr in tempondture of he acate and it sugtoandings, a pesspwtaneous, As = te n taneons As=-ve (3Ans aprocas is non Dur oHphese chme), hent i asobed endoflemie) =tve e cnou unt AH Vap Eabo Sulastauce incnaoges an it unpohises , ho inceea nRandomness tve nce a evnpornhion oes pantan ns