Experiment 4 – Chemical ReactionsReport FormName Katrina SearsNote: Save this file as Exp4_YourLastName.Remember to replace YourLastNamewith your real last name.A.Reaction of aluminum sulfate (alum) with ammonia1.Did aprecipitate(solid particles or cloudiness) form? What color is it? Did you detect ammoniaodor after the reaction? Yes, it produced a precipitate. It was white cloudy color and theprecipitate also formed whitish flakes on the surface of the mixture. I however didn’t detect anyammonia odor after the reaction occurred. After about fifteenish minutes you could see the whitestuff at the bottom of the glass.2.The reaction can be described in words as follows: aluminum sulfate reacted with ammoniumhydroxide forming theinsoluble product or precipitate,aluminum hydroxideand the water-soluble ammonium sulfate.The chemical equation can be written as follows (“aq” meansaqueous, dissolved in water):___KAl(SO4)2 (aq)+___NH4OH(aq)___Al(OH)3(s)+___(NH4)2SO4(aq)+___KOH(aq)a)
