Solute, A, has a distribution ratio between water and ether of 7.5 A 50 ml aqueous solution of 1M of compound A was extracted with two consecutive extraction of 25ml ether( 25 x2) : calculate the percent ofA remaining in the aqueous phase Select one: 21.1 % 1.6 % 4.4 % 11.7 % 1.38 %
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- The solubility of suberic acid C6H12(COOH)2 is 0.14 g/100 ml H2O and 0.56g/100 ml ethyl ether at 15 0C. Calculate the weight of suberic acid removed from 50 ml aqueous solution containing 40 mg acid by extraction with 50 ml ether. Calculate the weight of acid that would be removed by two successive 25 ml extraction with ether.I. Expressions of Concentration1. Calculate the sodium content, in terms of mEq, of 1 g of ampicillin sodium (C6H18N3NaO4S).2. A pharmacist dissolves the contents of eight (8) pcs of Clindamycin 250 mg capsules, into a sufficientamount of astringent to prepare 120mL of solution. What is the percentage strength (w/v) of clindamycinin the prescription?3. How many milliliters of a solute should be used to prepare 1 pint of a 15% (v/v) lotion?4. What is the molarity of a solution that is prepared by dissolving 10g Potassium chloride in enough water tomake 500mL of solution?5. Express in percentage the fluoride concentration in drinking water given in 0.6 ppm.Q1. Dissolved 0.273 grams of pure sodium oxalate (Na,C,O.) in distilled water and added sulfuric acid and titration the solution at 70 ° C by using 42.68 ml of KMNO, solution and has exceeded end point limits by using 1.46 ml of standard oxalic acid (H; C;O.) with 0.1024 N. Calculate the normlity of KMN0.. Note that the molecular weight of sodium oxalate (Na,C,O.) = 134 and its equivalent weight = 67
- Assume you dissolve 30.0 g of cobalt sulfate heptahydrate (CoSO4.7H2O) in 500 ml of a 1.0 MH2SO4 solution. Calculate the following for CoSO4.7H2O in this solution:(The Specific Gravity of 1.0 M H2SO4 @ 20°C is 1.0814 g/ml.) Molality, Mole fraction and Weight percentageHow much 1.0 M sodium bicarbonate solution (in mL) is needed to stoichiometrically react with 25 mL of 4.5% (w/v) acetic acid? Molecular weight of sodium bicarbonate = 84.007 gmol, molecular weight of acetic acid = 60.052 g/mol please provide explanationHexanoic acid was added to an immiscible biphasic solvent sysem, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D1) of hexanoic acid in CCl4 with respect to water.
- Dissolved 0.273 grams of pure sodium oxalate (Na2C204) in distilled water and added sulfuric acid and titration the solution at 70 °C by using 42.68 ml of KMNO4 solution and has exceeded end point limits by using 1.46 ml of standard oxalic acid (H2 C204) with 0.1024 N. Calculate the normlity of KMNO4. Note that the molecular weight of sodium oxalate (Na2C204) = 134 and its equivalent weight = 67 * %3DA 18 g of unknown organic sample was dissolve in 756 mL of benzene. The boiling point of benzene was increased by 3.36oC. As the first step of analysis, determine the moecular weight of the unknow sample? Kb of benzene= 2.64oC/m Bb of benzene = 80.09 oC density of benzene = 0.874 g/mL at 25 °C Answer in whole number, no units required.Hexanoic acid was added to an immiscible biphasic solvent system, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D2) of hexanoic acid in water with respect to CCl4.
- What are the respective concentrations (M) of Cu2+ and Cl- afforded by dissolving 0.637mol0.637mol CuCl2 in water and diluting to 289mL?289mL? What are the respective concentrations (M) of Cu2+ and Cl- afforded by dissolving CuCl2 in water and diluting to 0.454 and 0.092 2.20 and 2.20 2.20 and 4.41 0.00220 and 0.00220 0.00220 and 2.20Q1. Dissolved 0.273 grams of pure sodium oxalate (Na2C0.) In distilled water and added sulfuric acid and titration the solution at 70 ° C by using 42.68 ml of KMnO, solution and has exceeded end point limits by using 1.46 ml of oxalic acid (H , C, 0.) With 0.1024 N. Calculate the normlity of KMnO .. Note that the molecular weight of sodium oxalate (Na, C, 0.) = 134 and its equivalent weight = 6711. How much caffeine can be extracted using 50.0ml of DCM if a tea bag contains 15 grams of tea leaves with 0.9% of caffeine? And has undergone solid-liquid extraction with 100ml of distilled water followed by liquid-liquid extraction using DCM. The solubility of caffeine requires 15 ml of water and 2.0ml of DCM for 40.0mg. a 6.1 x 10^-5 b 6.0 x 10^-5 c 7.0 x 10^-5 d 7.1 x 10^-5