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Categories >> Sciences >> Chemistry >> Chemistry AllOther


 Organic Chemistry interview questions  Organic Chemistry Interview Questions (222)
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 Chemistry AllOther interview questions  Chemistry AllOther Interview Questions (71)
why do you use water & Disodium tartrate in karl fischer?
 Question Submitted By :: Chemistry-AllOther
I also faced this Question!!     Answer Posted By  
# 1
Sodium Tartrate Dihydrate is not absorb any moisture and
and more accurate we are going to select for DST when
water content sample <1.0 %only and DST when dissolved in
methanol not degrade
Is This Answer Correct ?    30 Yes 8 No
# 2
Sodium Tartrate Dihydrate as Primary Standard for Karl
Fischer Reagent
Is This Answer Correct ?    29 Yes 15 No
# 3
DST never absorb water room temp.& hence its factor never changes while calculating Moisture content 
Is This Answer Correct ?    13 Yes 1 No
# 4
1.this if the primary has known water
molecules .it cannotabsorb any water molecules
are constant.
Is This Answer Correct ?    12 Yes 4 No
# 5
because it is primary std. it will not absorbs water
content from the sample at room temp.and it will give more
accurate results for the determination of the KF factor.
Is This Answer Correct ?    3 Yes 1 No
Hema Latha
# 6
water molecules are constant. 
Is This Answer Correct ?    5 Yes 5 No

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For more Chemistry AllOther Interview Questions Click Here 

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