The Zipcode for Poland is. Poland is a village of Mahoning, Ohio in the Great Lakes region of the USA. It is located about 141 miles east-northeast of OH's capital city of Columbus.In the most recent US census the population of Poland was 2548. City/Zip code State.oland is a village of Mahoning, Ohio in the Great Lakes region of the USA. It is located about 141 miles east-northeast of OH's capital city of Columbus. In the most recent US census the population of Poland was 2548.
pH. The pH is a measure of the acidity of the water. The pH scale goes from 0 to 14, where pH 7 is neutral. If the pH is above 7, the water is basic; if it is below 7 the water is acid. The optimum pH for pool water is 7.4, since this is the same as the pH in human eyes and mucous membranes. A pH of 7.4 also gives good chlorine disinfection.
When chlorine is added to water, another dissociation occurs. When we add Cl2 (chlorine) + H2O (water), we get a reaction which leaves us with HOCl (hypochlorous acid) + HCl (hydrochloric acid). How much of each is created is dependent on water temperature, cyanuric acid level and especially on water pH.