what is diffrence between Specific optical rotation, optical
rotation?
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USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...
How to set analyticl specification for combination products?
in sampling of raw material which side is pasted sampled labels
what is %labelled amount in content uniformity of dosage unit and its calculation?
What is column in chromatography?
Why irmoisture balance is used for corrugated box moisture testing
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.
which are the diffrent batches in the pharmaceuticals?
How to calculate coreletion coefficient
Which parameter require to do for analytical method equivalency?
in gas chromatography what is the difference between gas flow rate and average linear velocity ?
why octanol used to determine the partition coefficient ?
WHAT IS THE USE OF STARTER ?????????
what is the structure of DOWEX-50
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.