what is principal of karl ficher instrument!
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Answer / deepak
karl fischer is based on the principle of bunsen reaction
where sulphur dioxide , iodine and a nitrogeneous base like
pyridine reacts to form the alkyl amino compounds which
reacts with water consuming it and hence determines the
extent of water present in the sample.
| Is This Answer Correct ? | 37 Yes | 1 No |
How much amount of water content present in substance by
utilising Water, Iodine and sulphur dioxide inpresence of
lower alcohol methanol and inpresences of base such as
pyridine.
| Is This Answer Correct ? | 34 Yes | 7 No |
Answer / vijaykumar
The Iodine present in the kari-fischer reagent wil react
with the water present in the sample> and will be
eliminated as HI.
H20+I2-----HI
| Is This Answer Correct ? | 22 Yes | 0 No |
Answer / nandkishor
The method is based on stoichiometric reaction between water
and a solution of sulfur dioxide and iodine in pyridine(or
any other base)and methanol the end point is detected
electrometrically
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / ravikumar glochem
One molicule water consume to one molicule of reagent... that means 1:1 ratio......
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / pharmainterview
One mole of iodine reacts with one mole of water present in the sample and forms 2 moles of HI.
Regards
http://www.pharmainterviewquestions.blogspot.in/
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / m. r. sinha
The property of karl fischer reagent is to absorb water, its
strength is generally mentioned on the bottle or can be
determined. Now, as it is being dissolved into the sample it
absorbs the water content of the sample and the solution
becomes water free and works as electrolyte solution and the
two electrodes complete the circuit (as it is dipped into
the solution) and gives signal to stop the flow of KF
reagent. With the help of KF volume (strength already known,
the water content in the sample is determined.
| Is This Answer Correct ? | 6 Yes | 6 No |
Answer / ravikumar glochem
one molicule water consume to the one molicule of reagent.... thioat means 1:1 ratio
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / ashok linge
Karl Fischer titration is a classic titration method in analytical chemistry that uses coulometric or volumetric titration to determine trace amounts of water in a sample.
| Is This Answer Correct ? | 0 Yes | 1 No |
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Organic Chemistry 
