Public Health Sanitarian Practice Test

Titration is the correct term used to describe the process of determining the concentration of an acid in a solution. This analytical technique involves the gradual addition of a titrant, which is a solution of known concentration, to a sample solution with an unknown concentration. By measuring the volume of titrant used to neutralize the acid, one can calculate the concentration of the acid in the original solution. Titration is widely used in various fields, including chemistry and environmental science, to quantify the amount of a substance in a sample accurately. Filtration, on the other hand, is a method used to separate solids from liquids by passing the mixture through a barrier that allows only the liquid to pass through. Precipitation refers to the formation of a solid from a solution due to a chemical reaction, often used in the context of removing substances from solutions but not for measuring concentration. Evaporation involves the removal of liquid from a solution by converting it into vapor, which is not a method for determining concentrations. Thus, titration stands out as the specific and precise method for determining the concentration of acids in solutions.