The Karl Fischer titrator is used to determine viscosity of liquids.

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

Answer: (B)

The main concept is that Karl Fischer titration assesses water content in a sample, not how thick or runny a liquid flows. The KF method uses a reagent that reacts specifically with water; in the volumetric approach the amount of titrant needed is proportional to the water present, and in the coulometric approach iodine is generated electrochemically and its quantity relates to the water content. Because this technique measures moisture, it does not determine viscosity, which is a property assessed with a viscometer or rheometer that observes flow under a given force. Therefore, the statement is false.