why KF factor is between 4.5 to 7.5 mg/ml ? why ? why
sometime pyridine is used in analysis like in raw material
solvent like acetone etc?
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Answer / suresh kumar
If we use methanol as a medium acetone will react with
methanol and side reaction takes place to give water
molecule as a biproduct hense the end point cannot be
attained, thats why we use pyridene or 2- propanol as a
medium in the case of determination of water content of
acetone by kf reagent.
| Is This Answer Correct ? | 106 Yes | 11 No |
Answer / tushar
1 ml of kf reagent = 5.0 mg water approx therefore kf
factor limit is 4.5 to 7.5 mg/ml
| Is This Answer Correct ? | 73 Yes | 36 No |
Answer / pratibha
Because acetone react with methanol and forms water as a side reaction so no end point we get. so for Acetone pyridine or other base we use.
| Is This Answer Correct ? | 13 Yes | 0 No |
Answer / nagulmeera
Acetone is highly reactive, so it reacts with methanol to give side products as water and ketals, our aim is to find water content but here excess water is generated so the titre value is not tru
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / anil suryawanshi
in the KF titration the Iodine react with water so the theoretical factor is 7.. Iodine mw=126.9/18 of water =7 so we get factor practically around 5
anil s
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / kevan bhalodiya
kf factor limite cant stable cause we use different type of reagent and thats strength are not same.
factor show only strendth of reagent.
so,factor limite cant consider.
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / ramraja
to avoid such water by product if analysis containing acetone and ketone which is under investigation fot that we can use hydranal reagent for kf titration.
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / urmila pawar
bcoz acetone has carbonyl functional grp which reacts with
metanol and forms different compound
| Is This Answer Correct ? | 9 Yes | 13 No |
Answer / pkv
just go through the reaction
mechnm u'll find ur ans.
| Is This Answer Correct ? | 7 Yes | 13 No |
Answer / jerrin babu.
KF titration has an optimum pH range of 5-7.
| Is This Answer Correct ? | 17 Yes | 35 No |
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Organic Chemistry 
