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 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?

Answer Posted / arti naik

The pink colour appears due to the change in the structure
of the phenolphthalein indicator and it forms a disodium
salt due to the base NaOH which then gives it a pink colour.

Is This Answer Correct ?    7 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is importance of pH in the Heavy metal test and How it effect on the test results?

2287


How doing qbd practically?

980


Related substance method equivalency on control sample or spiked sample?

771


what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2632


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

3244


What are modes of quantification in related substances

2165


If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?

776


in dissolution why pool sample needed? in which type of drug pool sample need?

3181


how can I make the copper get white bye any salt or acit?

2212


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

2656


[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

797


in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

759


why does used dry caffien in HPLC calibration?

2032


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

2177


AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

2059