What is a difference between potency and purity?
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Nitrogen test is used for which chromatography?
identification is for unknown? qualification for known? reporting for LOQ?
Can we interpret accuracy from linearity in method validation?
Do you know what Trace metal clean technique is?describe that technique?
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How we choose the mobile phase for method development.?
what is mean by content uniformity?
what is dwell volume in HPLC?
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what is the difference between EP and BP
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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?
what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR
Why we use 100 RPM in friability test
2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.