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Answer Posted / anil kumar
Wilhelm Roentgen
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why does used dry caffien in HPLC calibration?
in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?
How we choose the mobile phase for method development.?
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.
Why Ethanol is Used for Standardization of GC Head space?
WHAT IS THE USE OF STARTER ?????????
What is split ratio in Gc? Splitless? how requirr to select?
if you given one product then which tests you will perform?
what is mean by nitrosamine impurities?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
how to calculate elemental impurities?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
why require the ph, buffer during hplc mobile phase?
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.?
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.
