Is a Kd value of 10.16 reasonable for the extraction of benzoic Acid between methylene chloride and water? Please explain using extraction theory.
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Is a Kd value of 10.16 reasonable for the extraction of benzoic Acid between methylene chloride and water? Please explain using extraction theory.
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- Why is ethylene-di-amine tetra-acetic acid (EDTA) work as a base in complexometric titration? answer at your own words and answer should be to the point, not any irrelevant words25.0 cm3 of sodium hydroxide solution is tritrated against 0.200 mol dm–3 hydrochloric acid until the indicator just changes colour. 27.5 cm3 of the acid are required to reach the end point.Which of the following pieces of apparatus should be used to transfer 25.0 cm3 of the sodium hydroxide solution?a. Burette b. Pipette c. Measuring cyclinder d. Volumetric flaskThe color change at the endpoint should persist for 30 seconds. Explain why the time lapse is a good titration technique.
- Briefly explain why the sparingly soluble product mustbe removed by filtration before you back-titrate the excesssilver ion in the Volhard determination of a) chloride ion. b) cyanide ion. c) carbonate ion.5. Suggest a way to improve the accuracy of the potentiometric titration using our present equipment and materials.Calculate the volume in milliliters of .357 M KOH necessary to titrate .0282 moles of acetic acid to a phenolphthalein end-point. Report the answer with precision of two decimal places. I do not know how to set this up if you could explain how that would be great.
- What is the effect of the sprite/baking soda mixture on the acidity and basicity on a mixture?6. In gravimetric analysis, an ideal precipitating agent should i) React specifically or at least selectively with the analyte. ii) React rapidly with the analyte. iii) React completely with the analyte iv) All the above.If water was used to rinse the conical flask used for the titration, how would this affect your final estimate of hydrochloric acid concentration? (More, less or unchanged?) Explain why, discussing the number of moles that you would actually have due to the rinsing
- Given that the equivalence point volume from the second derivative plot is 7.3429, how many grams of salicylic acid (138.121 g/mol) was synthesized? To determine the yield of the hydrolysis reaction, potentiometric titration was done. NaOH was used as the titrant, and three trials of standardization with KHP yields a titrant concentration of 0.0427 M.What makes bromocresol green and phenolphthalein suitable for the double-indicator process?2. If 6 g of phenol (weak acid, pKa 9.9) is distributed between 100 mL of an aqueous buffered solution at pH 5 and 150 mL of mineral oil, how much phenol is left in the mineral ail layer? The partition coefficient for phenol in this system is 2.3.