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what will happen if aluminium sulfate is overdosed as a coagulant in a water tre

ID: 1036755 • Letter: W

Question

what will happen if aluminium sulfate is overdosed as a coagulant in a water treatment process ?

Question Completion Status: Moving to the next question prevents changes to this answer. Question2 What will happen if aluminum sulfate is overdosed as a coagulant in a water treatment process? OL. pH won't be affected and the particles will attract each other. O II. pH won't be affected but the particles will repel each other. O IIi, pH will increase and particles will tend to be neutral. V.pH will decrease and particles will tend to repel cach other because they will be positive. Moving to the next question prevents changes to this answer

Explanation / Answer

option 4 is correct

Al2 (SO4 )3.16H2O?2Al3++3SO42-+16H2O?2Al(OH)3+6H++3SO42- +10H2O

from this equation as you can see that hydrogen ions will react with the alkalinity of the water so pH decrease.