Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...


In the test for control of absorbance in UV calibration why
do we use only potassium dichromate and what is purpose of
taking a specified amount of 57.0-63.0mg?

Answers were Sorted based on User's Feedback



In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / manikatna

potassium dichromate is highly colourproducing agent
this amount is as per EP And edqm monograph.
if you change concentration change specific abs values

Is This Answer Correct ?    78 Yes 17 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / bhagya lakshmi.k

It will show max absorbance in Ultraviolet region (200-
400nm) (i.e) at 235,257,313,350 nm

Is This Answer Correct ?    53 Yes 4 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / sunil.m.kulkarni ( avon/arch p

Potassium Dichromate - UV Absorbance and Linearity
Product Description:
The use of potassium dichromate solvated in dilute
perchloric acid or suplhuric acid is an established and
well recognised method for the validation of the absorbance
scale and linearity of a spectrophotometer in the UV
region.
When prepared in 0.001M perchloric /Suplhuric acid,
potassium dichromate solution gives a spectral scan
containing characteristic peaks at 257 nm and 350 nm, and
troughs at 235 nm and 313 nm. Within the concen­tration
range 20-100 mg/l, if the absorbance scale of a narrow SBW
(< 2 nm) spectro­photometer is linear, the apparent
absorbances of a series of concentrations will be a linear
function of concentration.
Note: Primary standard ( Extra pure potassium dichromte
after drying to be used for calibration ) 57-63mg in -
1000ml concentration is perfect concentration for achiving
perfect charecteristic peak and throughs

Is This Answer Correct ?    36 Yes 5 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / sagadevan

becoz of photochemical stability,so on prolonged exposure to uv light the absorbance own not change,

Is This Answer Correct ?    18 Yes 4 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / devidas

it show the maxima at 235nm,257nm,313nm, and 350nm in UV
region. and it consider as a primary standard which is high
purity

Is This Answer Correct ?    18 Yes 7 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / vivek

we are use potassium dichromate for the verification of spectrophotometer because it show maximum absorbtion in uv region...

Is This Answer Correct ?    12 Yes 5 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / srinathsagar

UV range is 190-400nm so in this range potassium dichromate with sulfuric acid gives characteristic peaks(At 235,257,313 and 350nm)

Is This Answer Correct ?    4 Yes 1 No

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and..

Answer / pvinod6447

because it covers uv to visible region i.e. 235nm,257nm,313nm,350nm

Is This Answer Correct ?    6 Yes 4 No

Post New Answer

More Analytical Chemistry Interview Questions

What is the difference between ROI & sulphates ash?

1 Answers  


how to regulate noise in hplc ?

2 Answers  


why we are adjusting the ph in buffer solution preparation

2 Answers  


In acid base titration, after complet consumption of HCl by NaOH, addition of next drop of NaOH will give pink colour with phenolpthalein indicator. Why this pink colour appear? Why not blue, black, green or anything elese?

3 Answers  


in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

0 Answers  


control of resolution in calibration of IR

3 Answers  


What is the SOP for SOP

4 Answers   JBCPL,


Calculate the water content in Di Sodium Tartrate (DST) based on molecular weight?

3 Answers  


Hplc detect how much ppm solutions i want range

4 Answers  


what is the difference between polarimeter lamp and ir lamp

0 Answers  


in hplc calibration injector linearity pass,it means inj and det is good. why to perform detector linearity is it required, if it is required,what is difference between injector and detector linearity in hplc calibration

4 Answers   Dr Reddys, Hetero,


in hplc calibration we are using 0.05% acetone why we are using that one and what happen when its conc increases or decreases

4 Answers   Aurobindo, Cadila, Martin,


Categories
  • Organic Chemistry Interview Questions Organic Chemistry (342)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1387)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (190)