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- Calculate the gravimetric factor of the following. 2 Fe3O4 is sought(Analyte), 3 Fe2O3 is weighed (Precipitate) 2 Fe is sought(Analyte), 1Fe2O3 is weighed (Precipitate)Calculate the gravimetric factor of the following. 2 Fe3O4 is sought(Analyte), 3 Fe2O3 is weighed (Precipitate)Potassium acid phthalate, KHC8H4O4 ( MM=204.2 ), reacts with sodium hydroxide on a 1:1 molar basis. A sample of the acid weighing 0.4823 g was titrated with NaOH, requiring 24.35 mL to reach the endpoint. Calculate the molar concentration of the sodium hydroxide solution.
- Derive a general expression that shows pH dependence of the distributioncoefficient defined in (2-20) for a weak acid between a fermentation broth and an organic solvent.Calculate the % relative error in solubility by using concentrations instead of activitiesfor Fe(OH)2 in 0.0500 M KNO3 (give the source for thermodynamic solubility).Calculate the gravimetric factor of the following. 2 Fe is sought(Analyte), 1Fe2O3 is weighed (Precipitate)
- The water sample from the polluted estuary (number 4), was then subjected to a series ofinstrumental analysis like chromatography and spectroscopy to determine the exact identities of thepollutants. What kind of analysis are done to the unknown?a. Qualitative analysisb. Quantitative analysisc. Characterization analysisd. Fundamental analysisFor BaCO3, Ksp = 5.0 x 10-9 .. What is [Ba2+] in a saturated aqueous solution of BaCO3?Calculation of the volume of 1.25 M NaOH (aq.) required to extract 1.0 gram of 2-naphthol. Use 20% mole excess of NaOH (i.e. use 1.2 mol of NaOH for every 1 mol of 2-naphthol).
- If I have a concentrated stock chemical at 4.4 Molar, and I need 350mL at 1.5 Molar, how do I make this?what is the purpose of preparing of a standard sodium hydroxide solution in determination of purity of impure KHP?Calculate the masses of (i) Ca(NO3)2 and, separately, (ii) NaCl to add to a 0.150 mol kg−1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength to 0.250.