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How to caluclate %w/v& %w/w ple give examples solids&liquids 10%NAOH W/W 10%W/V- 20%HCL W/W &W/V
2503why all liquid raw materials fallows residue on evaporation at 105Degree temp. but methanol bp 60Degree
1 3865why using Potentometry What Purpose? differance between manual and potentiometry? why using Some of materials in usig potentiometry? What is use of mericuric acetate in Potentiometry
1 5744iam using ph instrument lab india make.3ponit and 5point.in calibration time 3point slope will come 98.89and 96.87.that limit is 85 to 105.what basis slope will come.any calucalation between them.5point wiicome slope 99.89?why 3p0int came 2 values
1 5420when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
ABC,
2041
why is acetic acid less conductive than hcl?
Explain what is the dipole moment of chlorooctane?
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.
Is cyclotetrane aromatic?
IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?
What is the monomer of polyethene?
in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?
WHAT IS THE USE OF STARTER ?????????
For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?
which are the diffrent batches in the pharmaceuticals?
What are the electrodes used in potentiometer titration?
Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.
how you fix the limits of impurities?
Why a1% value is used for some product ? What is the criteria for selection a1% value ?
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
