Free chlorine is a component of total residual chlorine, the portion of dissolved chlorine gas that is not bonded to any other reactants in water. The other portion is known as combined chlorine, which has bonded with chemicals, typically nitrates, in the water. These are terms used by water treatment professionals examining the safety of drinking water.Continue Reading
Chlorine is introduced to water supplies because of its ability to alter pollutants and kill harmful bacteria and other pathogens. The amount of contaminants in the water, whether they are metals or organic substances, determines the chlorine demand of the water. This is the amount of free chlorine that is consumed by reactions in the water. This reacted chlorine becomes combined chlorine, while any excess remains free chlorine. In perfectly clean water, chlorine demand is zero.
In certain cases, combined chlorine is introduced to the water or left in it as a disinfecting agent itself, preventing the growth of algae, aiding in the coagulation of organic substances and reducing odor. In either case, both free chlorine and combined chlorine are part of total residual chlorine. Small amounts of residual chlorine of both types are frequently left in the water sent out for residential and commercial use, as this helps keep the lines disinfected as well.Learn more about Chemical Equations
The Ka of HC2H3O2 is found by calculating the concentrations of the reactants and products when the solution ionizes and then dividing the concentrations of the products multiplied together over the concentration of the reactant. For HC2H3O2, the formula for Ka is Ka = [H3O+][C2H3O2]/[HC2H3O2].Full Answer >
Skeleton equations are created by placing the reactants, separated by plus signs, on the left-hand side, and the products on the right-hand side. These skeleton equations are generally unbalanced because they imply that only one molecule of each reactant and product is involved, which is not always the case.Full Answer >
Stoichiometry is a branch of chemistry that deals with the relationship between reactants and products involved in a chemical reaction. In other words, it deals with calculations of masses or volumes of relative quantities of elements involved in a chemical reaction.Full Answer >
Chemical equations are illustrations of the reactants and products in a chemical reaction. Chemical equations are expressed as A + B -> C, where A and B are the reactants, and C is the product.Full Answer >