What is the titrant used in the alkalinity test?

In the alkalinity test, sulfuric acid is commonly used as the titrant, particularly in a 0.02 Normal concentration. The purpose of the titration in this context is to determine the alkalinity of water, which indicates its ability to neutralize acids, essentially measuring the presence of carbonate, bicarbonate, and sometimes hydroxide ions.

Using sulfuric acid as the titrant allows for proper neutralization reactions with the alkaline substances present in the water sample. The choice of concentration is also crucial; 0.02 Normal is an appropriate level that can provide accurate and precise measurement results without overwhelming the sample with excessive titration, leading to clearer endpoint determination.

Other titrants listed may not be suitable for alkalinity testing in the context of standard procedures.