Is a Kd value of 10.16 reasonable for the extraction of benzoic Acid between methylene chloride and water? Please explain using the extraction theory.
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Q: Is a Kd value of 10.16 reasonable for the extraction of benzoic Acid between methylene chloride and…
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- (b) For column 1(i) What are the unadjusted retention times for components A and B?What is the matrix effect? How may it affect the results in quantitative analysis?11. [15'] the molar absorptivity (extinction coefficient) of benzene (C6H6) equals 100 M-¹ cm¹ at 260 nm. (Assume that this number is independent of solvent or other effects) a) What concentration would give an absorbance of 1.0 in a 1 cm cell at 260 nm? b) If the density of pure, liquid benzene is 0.8 g cm²³, what 'thickness' of pure benzene would also give an absorbance of 1.0 at 260nm?
- Substances A and B have retention times of 16.4 and 17.63 min, respectively, on a 30 cm column. An unretained species passes through the column in 1.3 min. The peak width at base for A and B are 1.11 and 1.21 min, respectively. Calculate:In spectrophotometry, there is a linear relationship between the extinction coefficient and the concentration of the sample. a linear relationship between the absorbance and the concentration of the sample. a logarithmic relationship between the absorbance and the concentration of the sample. an inverse relationship between the absorbance and the concentration of the sample. Which is NOT TRUE about performing a BLANK titration? Choose the best answer. It involves titration of a solution that is without the analyte. It involves titration of unreacted standard solution which has been added in excess to a sample. It involves a titration done in the absence of an analyte to correct for possible sources of error. It involves titration carried out on a solution different from the sample solution.In a sample of 90mL of Acetone and 130 mL of Chloroform, What is XAcetone? Please provide detailed explanation, if you can . Also, as a bonus( not required), Is there a relationship between Refractive Index of a Liquid with the mole ration of the liquid.
- Band broadening in chromatography is directly proportional to the column efficiency .a O inversely proportional to the column efficiency .b O directly proportional to the selectivity factor .c O not related to the column efficiency d OI'm working on a pre-lab report for chemistry regarding retention factors. The question asks what is the maximum distance the indicator band will travel? Is the indicator band sometimes referred to as the indictor spot?Describe how retention time of butanol on a poly (ethylene glycol) column will change with increasing temperature. Use the retention time for butanol in Figure 24-9b as the starting point.
- The retention times of two compounds A and B are 16.40 and 17.63 minutes. A species that is not retained passes through the column in 1.30 minutes. The peak widths (at the base) for A and B are 1.11 and 1.21 minutes, respectively. Calculate:a) The resolution of the columnb) The resolution between compounds A and BA chromatogram of a mixture of species A, B, and C provided the following data: a) Define "Retention time". b) Calculate the resolution between species A and B. c) Calculate the retention time of species B necessary to separate it from species A with a resolution of 1.5.The concentration of methylene blue in the sample is estimated through (select the correct) options: refractive index measurement (refractometry). turbidity measurement (turbidimetry). absorbance measurement (spectrophotometry). titration with 2% HCl solution.