Why we are use 0.005M Sulphuric acid, in control of absorbance performance test UV Spectrophotometer calibration
2 11040How much sample concentration should i inject against diluted standard in related substances for drug product in hplc analysis
1 1749Post New Analytical Chemistry Questions
Why sodium hydroxide used for maintain pH of phosphate buffer
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.
In Dissolution Test why limit is define Q+5% what is the role of +5%.
what is the difference between potentiometric titration and karl fischer titration?
what is difference between zero air gas and o2 gas
why we are using hexane in calibration of number of drop per mL
How can the GC or HPLC method is selected to determine the impurity profile in drug product?
if you have given a blank water how you analyse by general analytical techniques?
How we can determine water content in piperazine
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
What is gelatinization?
what is the purge flow & how to calculate
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.
What is the purpose of octyl silane columns?
How would you decide dissolution medium for NCE compound of class I drug
