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


Please Help Members By Posting Answers For Below Questions

why digestion require in icpms?

308


How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

2866


how you establish the LOQ?

313


In IR spectra, generally a molecule vibrates without apply emr or ir light?

1437


In Dissolution Test why limit is define Q+5% what is the role of +5%.

2576






In which situation we require to analytical method validation of excipient?

297


How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2020


what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

8446


What is the difference between spectro meter and spectro photo meter?

10424


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

313


which are the diffrent batches in the pharmaceuticals?

345


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2111


How much is the standard area for glc analysis

1749


How can I develope method of dissolution by HPLC OR UV

1893


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

9439