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Organic Chemistry (342) - Inorganic Chemistry (123)
- Analytical Chemistry (1387)
- Physical Chemistry (62)
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- Chemistry AllOther (190)
If benzene and tolune both can be mixed... what is the boiling point for the mixture and its density...?
2 4474why 0.005 M sulphuric acid is used to calbrate spectrophotometer and why caffiene is used for calibrating hplc
2 20904What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.
UST,
2 13797When we calculate Impurity against impurity std.solution and when we calculate impurity against diluted standard with applying RRF?
2 10664What is discriminating media? How can u justify/select that which media (pH etc...)is suitable for your dissolution study of your compound?
5 25833
Give the principle of potentiometer titration.
Tell me how many significant figures are there in the number 0.0036?
In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.
about method developement in hplc
why we should take dst factor for below 1%moisture samples
in api coa contains only process impurities and in product coa contains degradation impurities?
From where require to take the RLD sample?
Why is ammonia-ammonium chloride buffer added?
What is wave length?
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?
What is ciprofloxacin hcl?
Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?
What is column in chromatography?
how to decide for one product require water content or LOD?
how require to fix the linearity and accuracy cincentration range?
