why phepolphthalene giving pink color when we titrate
against to NaOH Solution ,giving colrless titrating
aginsiting with acids?
Answer Posted / raja.s
Phenolphthalin is base . So naoh is also base . Acid solutions add Phenolphthalin colour change
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
how to calibrate hplc & gc
why salisylic acid not using now days for disdolution calibration?
What is third generation HPLC Columns?
Why we use potassium dichromate in uv calibration Exact reason behind it??
inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?
how require to fix the linearity and accuracy cincentration range?
In Assy by potentio metry titration method how select MET U ,DET U, SET U,
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
what is mean by ambient temperature?
what type of question will ask in the interview of lab chemist.
How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?
we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion
If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?
if identification threshold crosses the limits then what next step?
if tech transfer fails whay require to do?