Karl Fischer titration is used to determine the water content of liquids.

• A. True
• B. False
• C. Not applicable
• D. Sometimes

Answer: (A)

Karl Fischer titration quantifies water content in liquids by a reaction that consumes water in a fixed stoichiometry. The reagent system either generates or contains iodine that reacts with water, and the amount of titrant needed to reach the endpoint directly corresponds to how much water is present. This makes it highly accurate across a wide range of liquids, from solvents to oils, and there are two common forms: volumetric titration with a standard iodine solution and coulometric titration where iodine is produced electrochemically. Because the method targets water specifically and gives a direct measure of its quantity, it is the standard technique for determining water content in liquids.