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 / umesh patel
in basic media(in NaoH), phenolphthelin shows pink color
only
colorless if pH of the media goes below 8
pink color will appear if pH goes beyond the pH of 10.00
| Is This Answer Correct ? | 11 Yes | 8 No |
Post New Answer View All Answers
why cone formation during dissolution?
how pda detector works over uv?
how will you do the prep for unstable componds?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
what is the structure of DOWEX-50
Identify problem faced when mass spectroscopy is used with HPLC system ?
what type of question will ask in the interview of lab chemist.
[3/28, 20:52] Manoj P Venkatpurwar: how many impurities require to inject in assay specificity that how we can find out? and in Rs also how?
What is gelatinization?
why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?
What is rs test why we are performing rs test?
how require to interprit the method precision data of hptlc?
Is it nessesary all multimedia dissolution require descriminatory?
why digestion require in icpms?
How to set specification of assay, fisdolution and related substances?