Assignment:
Assume we have a 1000L tank of water and very dilute weak acids. To this tank we add and dissolve 260 grams AL2(SO4)3 (solid granules) the resultant pH is 4. The intention is to form AL(OH)3 solids/particles in this reaction.
Question 1: How much Al(OH)3 will be formed in this reaction at pH=4.0
Question 2: If the pH were raised to 5.5 with NaOH, there is an appearance of more AL(OH)3 being formed.Why? And, how much more aluminum hydroxide would be formed at this higher pH?
Question 3: It also appears that not all of the alum (aluminum sulfate) dissolves in water and therefore limits the max. creation of aluminum hydroxide. Why?
Provide complete and step by step solution for the question and show calculations and use formulas.