Circle any statement(s) that are true about the use of alum as a coagulant in a water treatment process. You may select more than one. It will cause a decrease

in the pH of a water with no alkalinity It will consume the water's alkalinity, if available It will cause an increase in the pH of a water with no alkalinity If applied in combination with the correct amount of caustic soda, the pH of the water should not change much