what is kf principal
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Answer / mallesh
The titrimetric determination of water is based upon the quantitative reaction of water with an anhydrous solution
of sulfur dioxide and iodine in the presence of a buffer that reacts with hydrogen ions.
It means one mole iodine react with one mole of water
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / prasanna
The I2 in KF reagent reacts with water molecule and converts into hydroiodic salt. When water molecules are not available then the excess molecule of I2 will be detected by Iodine electrode. using the vol of KF consumed we can calculate water% in our sample.
| Is This Answer Correct ? | 2 Yes | 0 No |
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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
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