Key Difference â Aggregate vs Average Aggregate and average are two terms that are often used in calculations. However, these two terms mean two different things. Aggregate refers to the total sum of elements in a data set whereas average refers to the central value in a dataset. This is the key difference between aggregate and average. What Does Aggregate Mean? Aggregate is an adjective and a noun which refers to something formed or calculated by the combination of several separate elements.
Hypochlorous acid and hypochlorite ions, when combined, is known as free chlorine. Both of these establish equilibrium and are both temperature and pH dependent at 7.5 pH and 77Â°F (25Â°C). Hypochlorous acid is more potent than hypochlorite ions in terms of disinfection.
Theconcentrations of hypochlorous acid and the hypochlorite ion are approximately equal at pH7.5 and 25 Â°C. Chlorine can react with ammonia or amines in water to form chloramines(4,5). ANALYTICAL METHODS A colorimetric method can be used to determine free chlorine in water at concentrations of0.1â10 mg/litre. Other methods allow for the determination of free chlorine, chloramines,other chlorine species, and total available chlorine, and are suitable for total chlorineconcentrations up to 5 mg/litre.