Answer Posted / prashant
pKa=-log(Ka)... Ka=Ionisation Constant of Acid
pH=pKa+ Log[salt]/[acid]
| Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.
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 related substance by HPLC impurity limits as per USP?
How to choose the which salt is suitable for mobilephase
why require the ph, buffer during hplc mobile phase?
for which product require to do content uniformity? what is limit of cu?
what is mean by nitrosamine impurities?
In IR spectra, generally a molecule vibrates without apply emr or ir light?
Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc
My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
all types of questions asked at the cipla interview
Difference between the quantitative analysis and qualitative analysis?
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
Qc interview questions
UV and PDA detector, which have less signal to noise ratio?