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2432Acid value defination is numbber milligrams of KOH required to nuetralise the acid present in one gram oil & fats but why not use NaOH for nuetralisation?
5 11932When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason????????? When a cool glass rod is suudenly heatd, it cracks. Why?????????
3 7885What is the molarity of a NaOH solution if 32.47ml. isrequired to titrate 0.6013g of potassium hydrogen phthalate?
2 9781is urea addition affecting the COD (chemical oxygen demand) & BOD (Biological oxygen demand)level? why?
3 11600What 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 15019Post New General Chemistry Questions
Give the others form of iron ore.
What is the resulting solution when benzene and toluene are mixed ?
Mention a few important criteria for satisfactory colorimetric analysis.
What is the role of stannous chloride?
What are the products formed after cod analysis?
4.0 liters of oxygen are mixed with 8.0 liters of nitrogen. Identify the solute and solvent in this mixture:
Explain substituted hydrocarbon?
However ozone is heavier than oxygen still ozone is up there in sky why?
What is edta?
What are the advantages of conductometric titration over visual or potentiometric titration?
Fresh form of water is obtained from?
What is the white precipitate produced at the end of point?
What is the reaction that occurring between fas and potassium dichromate?
What is the unit of conductance?
Mention a few advantages of photoelectric colorimetric determination.
