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- If Vsu= Vorg, how many times should the extraction process be repeated in order for 1 g of substance with KD= 2.25 to pass 90.5% to the organic phase?If Vsu= Vorg, how many times should the extraction process be repeated so that 1 g of substance with KD= 2.25 passes 90.5% to the organic phase?difference between adsorption and absorption.
- Effect of dose on adsorption percentage of cadmium onto magnetite (pH 7; adsorbent dose = 0.05, 0.1, 0.5, 0.10, 0.15 g; initial concentration 100 ppm, T = 25°C, 150 rpm, Contact Time = 2 h) performed with ASS instrument. What is the optimal dosage?What part does adsorption play in froth floatation for the concentration of sulphide ores and heterogeneous catalysis?(c) Batch adsorption of 900 mg/L phenol was studied at 298 K using 50 mL aliquot at an optimized dose of 1.5 g of activated carbon. What is the adsorption capacity in mg/g at an equilibrium concentration of 650 mg/L?
- 7. A solid in contact with a gas at 12 kPa and 25°C adsorbs 2.5 mg of the gas and obeys the Langmuir isotherm. The enthalpy change when 1.00 mmol of the adsorbed gas is desorbed is +14.2 J. What is the equilibrium pressure for the adsorption of 2.5 mg of gas at 40°C? a) 9.9 kPa d) 8.3 kPa b) 10.8 kPa c) 9.1 kPaWrite the differences between adsorption and absorption?In the fluorination reaction of butadiene, the butadiene is adsorbed onto a catalyst C.To test the efficiency of the adsorption, the adsorption isotherm was determined.The volume of butadiene per gram of C varied as follows at constant temperature:p( kPa)- 13.3; 26.7 ; 40.0 ; 53.3 ; 66.7 ; 80.0V(cm3)-17.9 ; 33.0 ; 47.0 ; 60.8 ;75.3 ; 91.3At the temperature used, p* for butadiene is 200 kPa. Find a suitable isotherm for the data and determine Vmon. please assist.
- kindly answer this problem and follow this format GIVEN REQUIRED SOLUTION and write regibly thank you so much For the adsorption of a substance A from aqueous solution by charcoal at25oC the freundlich constants are n=3.0 and k=0.50 for y in grams per gramand C in grams per liter. What weight of a W is adsorbed by 2 g of charcoalfrom 1 L of a solution containing originally 2 g of the substance?18. Semi-permanent adsorption of polar analytes will cause: severe tailing of the peaks non-symmetrical peaks worse band separation all of the above are correct51. The adsorption of CO on mica at 90K gave the following results: Pressure 1.05 4.55 5.46 7.91 10.59 mm Hg x 10² Volume 13.0 16.5 16.8 17.8 18.3 adsorbed cm³ x 10² at STP Answer the following: i. Show that the data fit the Langmuir adsorption isotherm. ii. Evaluate the constants b and a. iii. Determine the volume adsorbed at saturation. iv. The surface area of the mica was 6.239 x 10² cm², calculate the area covered by one molecule of CO and the radius of the molecule.