2,5 ml volume has taken from an “hypothetic” solution which includes (3+) Sb and (3+) Fe and at the titration with 0.1004 N KMnO4, the wasted amount has found as 16,4 mL. The other 2,5 mL that has taken, has reduced with Zn after that, this 2,5 mL solution has titrates with the same KMnO4 solution solution and the wasted amount is 26,5mL. With these datas find the %concentrations of the ions at the solution.

2,5 ml volume has taken from an “hypothetic” solution which includes (3+) Sb and (3+) Fe and at the titration with 0.1004 N KMnO4, the wasted amount has found as 16,4 mL. The other 2,5 mL that has taken, has reduced with Zn after that, this 2,5 mL solution has titrates with the same KMnO4 solution solution and the wasted amount is 26,5mL. With these datas find the %concentrations of the ions at the solution.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.9QAP

See similar textbooks

Similar questions

A 100-mL sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of Mg2 is added as previously, and the volume of EDTA required is 31.84 mL. a. What volume of EDTA is used in titrating the Ca2 in the hard water? _____________mL b. How many moles of EDTA are there in that volume? _____________ moles c. How many moles of Ca2 are there in the 100 mL of water? _____________ moles d. If the Ca2 comes from CaCO3, how many moles of CaCO3 are there in one liter of the water? How many grams of CaCO3 are present per liter of the water? _____________ mol / L _____________ g / L e. If 1 ppm CaCO3 = 1 mg per liter, what is the water hardness in ppm CaCO3? _____________ ppm CaCO3
Compare the 2 quantities based on the given condition. Choose A If quantity in Column 1 is greater B If quantity in Column 2 is greater C If the two are equal D If relationship cannot be determined Titration of 25.0-mL 0.0150 M Fe2+ solution I. Volume at EP using 0.0100 M Ce4+ as titrant II. Volume at EP using 0.0100 M Mn04- as titrant
ollowing statements is incorrect A) Standardization is required when the titrant solution molarity is approximate B) A standard solution should react completely with the analyte. C) A secondary standard should be highly pure (99.99%). D) Back-titration is required when the rate of the reaction slow. E) Titration error is the difference between equivalence point volume and end point volume.
Precipitation Titration (Argentimetry) All of the following is true regarding Argetometric titration method except: a) The method can be used for determination of Br and I b) AgNO, is the titrant and it is not a primary standard c) In Fajan's method excess amount of AgNO, is added then back titrated with Thiocyanate d) Different methods can be used for detecting the end point e) Fajan's method depends on using fluorescence indicators such as Dichlorofluorescine
It is desired to determine the concentration of chlorides in a powdered milk following the method of Volhard, for such case 1.5g of milk is weighed, it is heated in a muffle until obtaining ashes, which are treated with acid water with some drops of HNO3, the solution is filtered and the obtained filtrate is collected in an Erlenmeyer and 20 mL of AgNO3 0 is added. 1M excess silver is titrated with 0.05M potassium thiocyanate, if 8 mL of KSCN has been used up at the time of the indicator turn. Calculate the % of chloride in the milk powder.