If 50.0 mL of Thiosulfate solution are required to titrate the l2 liberated from an excess of KI 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 I2.
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- If 50.0 mL of Thiosulfate solution are required to titrate the I2 liberated from an excess ofKI by 0.3000 grams of potassium Iodate, calculate (a) normality of the thiosulfate solution(b) value of each milliliter of Thiosulfate solution in terms of grams of I2.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.The size of a nitrate ion is 300 pm. In a 0.085 M NaNO3 aqueous solution at 25°C, what is the activity coefficient of NO3- ?
- In standardizing a solution of NaOH against 1.431g of KHC8H4O4, the analyst uses 35.50 mL of the alkali and has to run back with 5.12 mL of acid ( 1mL ≎0.0031g Na2O) What is the normality of NaOH?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?A 0.2182g sample of NaCl was assayed by the Volhard Method using 50mL of 0.0985N AgNO3 and 11.75mL of 0.1340N NH4SCN. Calculate the %NaCl in the sample
- A 600.0 mg sample consisting of only CaC2O4and Mg C2O4is heated at 500oC converting the two salts to CaCO3and MgCO3. The sample weighs 465.0 mg. If the sample had been heated at 900oC where the products are CaO and MgO, what would the mixture of oxides weigh? Show the clear and complete solutionDescribe (in detail) the preparation of 800 mL of 50 parts per thousand of Cl- from 0.02 M Lead(II) chlorideWhat volume of a 0.186 molL−1 Na3PO4 solution is necessary to completely react with 91.9 mL of 0.103 molL−1 CuCl2?v
- As solution was prepared by dissolving 5.76g of KCl.MgCl2.6H2O (277.85g/mol) in sufficient water to give 2.000L. calculate a. pMg for the solution b. pCl for the solutionIf 0.454g of thyroxine is dissolved in 10g of benzene, the freezing point of the solution could be measured as 5.144 C. Pure benzene freezes at 5.444C and has a value for the molal freezing point depression constant of Kf of 5.12C/m. What is the approximate molar mass of thyroxine?What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained from 650 mL of 0.0170 M aqueous solution of LaCl3 by adding a stoichiometric amount of sodium oxalate ? with solution/explanation