A 10.00 mL sample of saturated Ca(IO3)2 was collected from a solution at 10.2°C. After adding excess KI and H+, the resulting solution required 8.52 mL of 0.0543 M Na2S2O3 to titrate to the endpoint.
What was the molarity of calcium ions in the original 10.00 mL sample of Ca(IO3)2?
A 10.00 mL sample of saturated Ca(IO3)2 was collected from a solution at 10.2°C. After adding excess...
A 10.00 mL sample of saturated Ca(IO3)2 was collected from a solution at 10.2°C. After adding excess KI and H+, the resulting solution required 8.52 mL of 0.0543 M Ca(IO3)2 to titrate to the endpoint. Identify how many moles of Na2S2O3 are in 8.52 mL of 0.0543 M Na2S2O3?
A 10.00 mL sample of saturated Ca(IO3)2 was collected from a solution at 10.2°C. After adding excess KI and H+, the resulting solution required 8.52 mL of 0.0543 M Ca(IO3)2 to titrate to the endpoint. How many moles of S2O32- are in 8.52 mL of 0.0543 M Na2S2O3?
3. In an experiment, 10.00 mL of Cu(IO3)2 were mixed with a scoop of KI, a scoop of sodium citrate, and small amount of sulfuric acid. 15.22 mL of 0.0473 M Na S203 were required to titrate to the endpoint. What is the concentration of [103] in the original solution? Continued on back 265
A 0.357 g of sample of an unknown oxidant is added to an excess solution of KI resulting in the production of I2 (assume a 1:1 ratio for oxidant:I2). The resulting solution was then titrated with a 0.103 M solution of Na2S2O3. The endpoint was reached after adding 16.82 ml of the titrant. Determine the Formula weight of the oxidant to nearest whole number.
A saturated solution of calcium iodate contains 2.37 g/L of Ca(IO3)2. (a) What is the solubility of calcium iodate in mol/L? (b) What are the concentrations of Ca2+ and IO3 – ion, respectively, in the saturated solution? (c) Calculate the Ksp value for Ca(IO3)2. Part b ) Silver ion, Ag+ , readily forms complex ion, Ag(S2O3)2 3– , with thiosulfate, S2O3 2– , according to the following equation: Ag+ (aq) + 2S2O3 2– (aq) ⇌ Ag(S2O3)2 3– (aq); Kf =...
500.0 mL of water is saturated with calcium hydroxide at a given temperature. If [Ca+2] = 0.0080 M in this saturated solution, what is the molarity of hydroxide ions in this solution?
A 25.0 mL sample of a saturated Ca(OH)2 solution is titrated with 0.026 M HCl, and the endpoint is reached after 35.9 mL of titrant are dispensed. Based on this data, what is the concentration of the hydroxide ion?
A student gets a 3 mL sample of saturated KHP at 28.0°C. It takes 27.6 mL of 0.107 M NaOH to titrate to the endpoint. How many moles of NaOH is this? How many moles of KHP were present in the sample? what is the molarity of the saturated KHP solution? What is the value of Ksp for this solution? (Assume syringe volume is good to 2 dp. Assume buret volume is good to 2 dp. Assume molarity of NaOH...
A 10.00-mL sample of Ba(OH)2 solution was pipetted into a beaker. An excess of aqueous sodium phosphate (the precipitating reagent) was added. The resulting precipitate was filtered and dried. The mass of the precipitate was 0.2974 g. (a) Write a balanced equation for the precipitation reaction. (b) Calculate the molarity of the Ba(OH)2 solution from the mass of the precipitate.
2. Solubility and Ksp of saturated CallO3)2 in o.0100 M KIO3 About 30-35 mL of this saturated solution was filtered. Two 10.00 mL samples of this solution were combined with -2 g KI, -50 mL of H20, and 10 mL 1.0 M HCL Each solution was titrated with standard thisolulfate solution (0.04913 M) exactly as in part 2 to a colorless end-point. The following data was collected Trial 1 Trial 2 Vr 23.79 mL 47.64 mL V- 0.00 mL 23.79...