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- The distribution coefficient (K) of formic acid (HCO2H) in 1-octanol versus water is 0.39. If a solution of 4.00 grams of formic acid in 100.00 mL of 1-octanol is extracted with one 10.00 mL portion of water, how many grams (to the hundredths place) will remain in the organic layer?The distribution coefficient, k for a compound “A” between hexane and water is 7.5. What weight of A would be removed from a solution of 10 g of A in 100 mL of water by a single 100 mL extraction with hexane?How 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 explanation
- 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.If 50.0 mL of Thiosulfate solution are required to titrate the 12 liberated from an excess of Kl by 0.3000 grams of potassium lodate, calculate (a) normality of the thiosulfate solution (b) value of each milliliter of Thiosulfate solution in terms of grams of 12.0.1 g of the mixture of na2so4 and k2so4 is taken and 100 ml of solution is prepared. 10 ml of this prepared solution is placed in a beaker and some distilled water is added. A mass of 15.5 mg is obtained by precipitation with Bacl2 at PH=5, then filtering and bringing to a constant weight at 800 °C. Calculate the percentages of Na2so4 and K2so4 in the mixture accordingly.
- The distribution coefficient, k = concentration in hexanes concentration in water, between hexanes and water for solute A is 6.0. What weight of A would be removed by hexanes from a solution of 10 grams of A in 100 mL of water by a single extraction with 100 mL of hexanes? what weight of A would be removed by two successive extractions with 50 mL of hexanes? How many mL of hexanes would be required to remove 98% of A from a solution of 10 grams of A in 100 mL of water?Dissolved 0.273 grams of pure sodium oxalate (NaCO) 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 (HCO) with 0.1024 N Calculate the normlity of KMNO Note that the molecular weight of sodium oxalate (NaCO) = 134 and its equivalent weight = 67The distribution coefficient, k = concentration in hexanes concentration in water, between hexanes and water for solute A is 6.0. What weight of A would be removed by hexanes from a solution of 10 grams of A in 100 mL of water by a single extraction with 100 mL of hexanes? a.) What weight of A would be removed by two successive extractions with 50 mL of hexanes? b.)How many mL of hexanes would be required to remove 98% of A from a solution of 10 grams of A in 100 mL of water?
- Part 1: Preparation of the Primary Citric Acid Standard Mass of Citric Acid: 4.05 g Volume of Citric Acid Solution: 7.5 (at the equivalence point) Moles of Citric Acid: 0211 mol (Molar Mass = 192.0 g/mol) Molarity of Citric Acid Solution: 0.2813 help me with part Part 2: Titration of the Sodium Hydroxide Solution Volume of Citric Acid at the Equivalence Point _____________ Moles of Citric Acid at the Equivalence Point _______________ Moles of NaOH at the Equivalence Point __________________ 3 NaOH + H3C6H5O7 à Na3C6H5O7 + 3 H2O Volume of NaOH _______________________________ 5. Calculated Molarity of NaOH _______________________A standard solution is prepared by completely dissolving 0.4 grams of CaCl2 and 0.2 grams of MgCO3 salts in 1-Liter DI water in a glass bottle closed to the atmosphere. The equilibrium pH of the standard solution is adjusted to 7.3 using acid-base solutions. Assuming the amounts of acid and based used in the initial pH adjustment is negligible, calculate : Temporary and permanent hardness of the solution as mg/L CaCO3. Total alkalinity and acidity as mg/L CaCO3. Useful information for problem :Calculated solely at 25 Celsius of PbCrO4 in pure water and in a .0130M. Na2CrO4 solution. Ksp of PbCrO4 is 2.8x10^-13