Pool Operator Exam 100% Accurate!

whole range chlorine in a pool: ____ to _____ - ANSWER 1, 5 ideal range chlorine in a pool: ____ to _____ - ANSWER 2, 4 whole range chlorine in a spa: ____ to _____ - ANSWER 2, 10 ideal range chlorine in a spa: ____ to _____ - ANSWER 3, 5 4 types of solid chlorine - ANSWER calcium hypochlorite, lithium hypochlorite, trichlor, dichlor liquid chlorine - ANSWER sodium hypochlorite (NaOCl) how active is gas chlorine - ANSWER 100% the active killing form of chlorine in water - ANSWER hypochlorous acid (HOCl) HOCl = ______ - ANSWER H+ (hydrogen ion) + OCl- (hypochlorite ion) most common granular chlorine (pH range) - ANSWER calcium hypochlorite (8.5 - 11, used to super chlorinate water) not common form of chlorine due to low active strength (pH) - ANSWER lithium hypochlorite (10.8) tablet/stick chlorine usually used in erosion feeder (pH - what will it do?) - ANSWER trichlor (2.8 - 3.5, lower alkalinity and pH over time) salt used as a disinfectant (pH) - ANSWER dichlor (6.7 - common in vinyl lined pools) most common type of chlorine used (pH) - ANSWER sodium hypochlorite (NaOCl - 13) ______ needs special training to use and has a pH of ____ and will _____ when added to water - ANSWER gas chlorine, 0, lower pH chlorine is most effective as a pH of _____ - ANSWER 7.5 active disinfectant in the water - ANSWER free chlorine (FC) FC is determined by the ______ test and is maintained between ____ and ____ ppm - ANSWER DPD, 2, 4