1. Esrp for aluminum is -1.66V. Why is Al not reactive when dipped in cold water?2. Explain why the reaction between water and Al becomes more reactive when Al has been treated first with Mercury chloride.3. Aluminum hydroxide dissolve in both acid and base. What do you call this type of behavior?4. Describe the function of aluminum hydroxide in the testile industry.5. Aluminum sol. which contains [Al(H2O)6]3+ ions have the tendency to hydrolyze. Why? Recommend a method to prevent hydrolysis of aluminum ions.6. In the preparation of alum, sulphuric acid is added to the aluminum hydroxide sol. Why?
1) Aluminum forms a natural oxide coating in air that is very unreactive, so when you put it from air into water, nothing happens. 2) Mercury chloride reacts with the aluminum to form an amalgam (mercury-aluminum alloy) and is very reactive. 3) Amphoteric behavior 4) No idea. Check you textbook or class notes. 5) No idea. 6) To form aluminum sulfate
Al is not reactive because it is so reactive - it gets coated with oxide immediately on exposure, the oxide layer is strong and quite inert except to strong acids.
