100mL of ~0.1M KMnO4solution was transferred to 1000mL volumetric flask and dilute to the mark with...

100mL of ~0.1M KMnO₄solution was transferred to 1000mL volumetric flask and dilute to the mark with distilled water but accidently I added 50mL more water (50 mL excessed, total 1050mL.)

0.1002g of Na₂C₂O₄ and 32.73mL of permanganate solution were used to titrate.

please Calculate the concentration of MnO₄^-

Expert Solution

queen_honey_blossom answered 2 years ago

10 mL of bleach with an unknown concentration is added to a 100mL volumetric flask. The...

10 mL of bleach with an unknown concentration is added to a 100mL volumetric flask. The solution is then finished with deionized water. 10 mL of this diluted bleach solution is then added to an erlenmeyer flask along with 1 scoop of KI, and 5 L of 2M HCl. This solution is then titrated with Na2S2O3 until it is a pale yellow color, then a starch indicator is added and titration is completed until the solution is clear. If 43...

Having trouble calculating the error of a diluted solution in a 100mL volumetric flask. Concentration is...

Having trouble calculating the error of a diluted solution in a 100mL volumetric flask. Concentration is 0.005 +/- 0.005M Amount of Concentrated solution: 5.0mL +/- 0.1mL Volumetric flask: 100mL +/- 0.08mL My calculation so far is ((0.1/5)+(0.005/0.005)+(0.08/100))*.00025 I keep getting 0.0002552 as my error but the answer key is 0.00003. Whats wrong in my formula?

A student weighs by difference 0.1956g of sodium oxalate into a 100ml Volumetric flask and dilutes...

A student weighs by difference 0.1956g of sodium oxalate into a 100ml Volumetric flask and dilutes to the mark 10mL of HCI and 90mL of distilled water. The student then pipetted a 25mL aliquot of the ocalate solution to a 125mL Erlenmeyer flask. Approximately how many mL's of 0.02 M KMnO4 would be requied to reach the equivalence point of the trtration? The balanced alf reactions are: Reduction: MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O Oxidation: C2O4 2-...

1) A soil sample of 2.0134g was extracted, transferred to a 100.00ml volumetric flask. A 10.00mL...

1) A soil sample of 2.0134g was extracted, transferred to a 100.00ml volumetric flask. A 10.00mL aliquot was titrated with EDTA of molarity 0.002052M and the volume of EDTANa2 was found to be 23.82mL. Calculate a) the number of moles of EDTANa2 titrated b) the corresponding total number of moles of (calcium and magnesium combined) in the titrec c) the concentration of (calcium and magnesium) combined) in the soil sample of units of moles/g d) the above concentration in units...

1.25-g of BaCl2 is placed in a 4.000 L volumetric flask. Then the volumetric flask is...

1.25-g of BaCl2 is placed in a 4.000 L volumetric flask. Then the volumetric flask is filled with D.I. water to the 4.000 L mark. All the BaCl2 goes into the solution. Assume the density of the solution is 1.00 g/mL. What is the mass/mass (m/m) % and the mass/volume (m/v) of the solution?

0.1200 g of potassium dichromate primary standard is dissolved, quantitatively transferred into a 250-mL volumetric flask...

0.1200 g of potassium dichromate primary standard is dissolved, quantitatively transferred into a 250-mL volumetric flask and diluted to volume. 0.3000 g an unknown iron ore sample was dissolved in hydrochloric acid, treated with stanous chloride and mercury(II) chloride, quantitatively transferred to a 100-mL volumetric flask and diluted to volume. 25.00 mL of the unknown iron(II) solution was pipetted into 500-mL Erlenmyer flask and titrated with the potassium dichromate solution. 28.00 mL of potassium dichromate is required to reach the...

if you make up a solution of 100ml of 0.1m HEPES in the basic form what...

if you make up a solution of 100ml of 0.1m HEPES in the basic form what will be the pH? show all work

What was the initial concentration of 100ml of KBr solution, if after adding water to dilute...

What was the initial concentration of 100ml of KBr solution, if after adding water to dilute it, 300ml of a 4 percent solution was obtained?

In the simulation on Solution Preparation you are instructed to invert the volumetric flask to mix...

In the simulation on Solution Preparation you are instructed to invert the volumetric flask to mix the contents by covering the opening with a gloved finger. Explain why this is a bad idea.

Prepare 100mL of a 0.1M potassium phosphate buffer of pH 6.5. You have K2HPO4 and KH2PO4...

Prepare 100mL of a 0.1M potassium phosphate buffer of pH 6.5. You have K2HPO4 and KH2PO4 in solid/salt form available to mix with water to create this buffer. Final answer must include how many grams of each salt to mix with how many mL of water to prepare the buffer. I started this problem and got as far as using the Henderson-Hasselbalch equation and that the ratio of [HPO42-] to [H2PO4-] is 0.48 moles to 1 mole.

Question