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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?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?
- 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.51. 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.5) In the adsorption of N2 at 90.1 K on a certain solid, the following volumes of gas, reduced to standard condition, were found to be adsorbed per gram of the solid at the indicated relative pressures. Determine: a) the BET constants b) E, and E c) identify the type of isotherm P/po 0.05 0.10 0.15 0.20 0.25 V, cm³ 51.3 58.8 64.0 68.9 74.2