The ability of sulphur dioxide to reduce iodine is used in which of the following methods?
A. Colorimetry
B. Conductivitimetry
C. Coulometry
D. Gas chromatography
Answer:C
The ability of sulphur dioxide to reduce iodine is used in which of the following methods?
A. Colorimetry B. Conductivitimetry C. Coulometry D. Gas chromatography
Explanation: The ability of sulphur dioxide to reduce iodine is used in Coulometry method to measure sulphur di-oxide. The mass of I2 reacted per unit time will indicate the amount of sulphur di-oxide.